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This unique t-shirt features Triple Beam Scale schematics from a genuine vintage U.S. Patent filed in 1932! These shirts look awesome, fit well, are great conversation starters and an excellent...

This unique t-shirt features Mechanical Keyboard Buckling Spring schematics from a genuine vintage U.S. Patent filed in 1978! These shirts look awesome, fit well, are great conversation starters...

This unique t-shirt features Concrete Mixer schematics from a genuine vintage U.S. Patent filed in 1900! These shirts look awesome, fit well, are great conversation starters and an excellent gift...

This unique t-shirt features Dot Matrix Printer schematics from a genuine vintage U.S. Patent filed in 1993! These shirts look awesome, fit well, are great conversation starters and an excellent...

Glucose Blood Sugar Molecule chemistry t-shirt. Printed on Gildan athletic fit cotton t-shirts. These shirts look awesome, fit well, are great conversation starters and an excellent gift for...

This unique t-shirt features Shock Absorber schematics from a genuine vintage U.S. Patent filed in 1979! These shirts look awesome, fit well, are great conversation starters and an excellent gift...

This unique t-shirt features Survival Knife schematics from a genuine vintage U.S. Patent filed in 1973! These shirts look awesome, fit well, are great conversation starters and an excellent gift...

This unique t-shirt features Binoculars schematics from a genuine vintage U.S. Patent filed in 1982! These shirts look awesome, fit well, are great conversation starters and an excellent gift for...

This unique t-shirt features Spark Plug schematics from a genuine vintage U.S. Patent filed in 1990! These shirts look awesome, fit well, are great conversation starters and an excellent gift for...

This unique t-shirt features Bomb Robot schematics from a genuine vintage U.S. Patent filed in 1984! These shirts look awesome, fit well, are great conversation starters and an excellent gift for...

This unique t-shirt features Land Mine schematics from a genuine vintage U.S. Patent filed in 1928! These shirts look awesome, fit well, are great conversation starters and an excellent gift for...

This unique t-shirt features C-130 Hercules schematics from a genuine vintage U.S. Patent filed in 1954! These shirts look awesome, fit well, are great conversation starters and an excellent gift...

This unique t-shirt features Floppy Disk schematics from a genuine vintage U.S. Patent filed in 1997! These shirts look awesome, fit well, are great conversation starters and an excellent gift for...

This unique t-shirt features Superheated Nuclear Reactor schematics from a genuine vintage U.S. Patent filed in 1964! These shirts look awesome, fit well, are great conversation starters and an...

This unique t-shirt features M82 M107 Rifle schematics from a genuine vintage U.S. Patent filed in 1989! These shirts look awesome, fit well, are great conversation starters and an excellent gift...

This unique t-shirt features Wright Bros Airplane schematics from a genuine vintage U.S. Patent filed in 1906! These shirts look awesome, fit well, are great conversation starters and an excellent...

This unique t-shirt features Carabiner schematics from a genuine vintage U.S. Patent filed in 1868! These shirts look awesome, fit well, are great conversation starters and an excellent gift for...

This unique t-shirt features Scuba First Stage schematics from a genuine vintage U.S. Patent filed in 1974! These shirts look awesome, fit well, are great conversation starters and an excellent...

This unique t-shirt features Skim Tank schematics from a genuine vintage U.S. Patent filed in 1962! These shirts look awesome, fit well, are great conversation starters and an excellent gift for...

This unique t-shirt features Pole Vaulting Box schematics from a genuine vintage U.S. Patent filed in 1963! These shirts look awesome, fit well, are great conversation starters and an excellent...