Combined pocket ruler and magnifier

Details Combined pocket ruler and magnifier Combined pocket ruler and magnifier

1977-08-12

1979-10-02

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

D16 54, D10 71, D1004

Patent

active

D02530457

REFERENCES:
patent: D94464 (1935-02-01), Bausch
patent: D153637 (1949-05-01), Reiss
patent: D172945 (1954-09-01), Baker
patent: D195359 (1963-06-01), Robbins
patent: D200681 (1965-03-01), Hermann
patent: D245253 (1977-08-01), Moskowitz
patent: 2463694 (1949-03-01), Jenison

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