Lens measuring device

Details Lens measuring device Lens measuring device

1984-07-24

1987-03-17

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

D10 70

Patent

active

D02887860

REFERENCES:
patent: 1520445 (1924-12-01), Rushmer
patent: 1528138 (1925-03-01), Watson
patent: 1790572 (1931-01-01), Bugbee
patent: 2190582 (1940-02-01), Wolf
patent: 2535633 (1950-12-01), Hobbs
patent: 2617200 (1952-11-01), Klein
patent: 3050860 (1962-08-01), Kosh
patent: 3313031 (1967-04-01), Lowe
patent: 3740857 (1973-06-01), Nerad
patent: 3981081 (1976-09-01), Welch
patent: 4208800 (1980-06-01), Grolman

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