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This unique t-shirt features Acoustic Guitar Bridge schematics from a genuine vintage U.S. Patent filed in 1966! These shirts look awesome, fit well, are great conversation starters and an...

This unique t-shirt features Rubber Ducky schematics from a genuine vintage U.S. Patent filed in 1949! These shirts look awesome, fit well, are great conversation starters and an excellent gift...

This unique t-shirt features Drum Pedal schematics from a genuine vintage U.S. Patent filed in 1914! These shirts look awesome, fit well, are great conversation starters and an excellent gift for...

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

This unique t-shirt features Lawn Sprinkler schematics from a genuine vintage U.S. Patent filed in 1897! These shirts look awesome, fit well, are great conversation starters and an excellent gift...

This unique t-shirt features Railroad Rail Joint schematics from a genuine vintage U.S. Patent filed in 1903! These shirts look awesome, fit well, are great conversation starters and an excellent...

This unique t-shirt features Toilet 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 new...

This unique t-shirt features Roulette Wheel schematics from a genuine vintage U.S. Patent filed in 1931! These shirts look awesome, fit well, are great conversation starters and an excellent gift...

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

This unique t-shirt features Washing Machine schematics from a genuine vintage U.S. Patent filed in 1966! These shirts look awesome, fit well, are great conversation starters and an excellent gift...

This unique t-shirt features Slingshot schematics from a genuine vintage U.S. Patent filed in 1952! These shirts look awesome, fit well, are great conversation starters and an excellent gift for...

This unique t-shirt features Metronome schematics from a genuine vintage U.S. Patent filed in 1903! These shirts look awesome, fit well, are great conversation starters and an excellent gift for...

This unique t-shirt features Cassette Tape 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 Pick Resistant Lock schematics from a genuine vintage U.S. Patent filed in 1969! These shirts look awesome, fit well, are great conversation starters and an excellent...

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

This unique t-shirt features Cribbage Board schematics from a genuine vintage U.S. Patent filed in 1885! These shirts look awesome, fit well, are great conversation starters and an excellent gift...

This unique t-shirt features Drill Press schematics from a genuine vintage U.S. Patent filed in 1920! These shirts look awesome, fit well, are great conversation starters and an excellent gift for...

This unique t-shirt features Clutch schematics from a genuine vintage U.S. Patent filed in 1921! These shirts look awesome, fit well, are great conversation starters and an excellent gift for auto...

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

This unique t-shirt features Pinball Ball Release Gate schematics from a genuine vintage U.S. Patent filed in 1949! These shirts look awesome, fit well, are great conversation starters and an...