Novelty ruler

Details Novelty ruler Novelty ruler

1980-07-01

1982-08-10

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

D1004

Patent

active

D02657260

REFERENCES:
patent: D81776 (1930-08-01), Conaway
patent: D178863 (1956-10-01), Brannock
patent: 2163661 (1939-06-01), Brown
patent: 2477817 (1949-08-01), Mirti
patent: 3022577 (1962-02-01), Rockmore

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