Lens block

Details Lens block Lens block

1981-07-10

1983-07-26

Ansher, Bernard

Machines not elsewhere specified

Material working, abrading, or founding machinery

Abrading

D16134, D1599

Patent

active

D02698781

REFERENCES:
patent: D214847 (1969-08-01), Urbach
patent: D215465 (1969-09-01), Ball et al.
patent: D228935 (1973-10-01), Hannaman
patent: D241059 (1976-08-01), Young
patent: 291469 (1884-01-01), Bradbury
patent: 3213569 (1965-10-01), Haugen et al.
patent: 4267672 (1981-05-01), Sorrells
patent: 4330203 (1982-05-01), Oppenheim
patent: 4358913 (1982-11-01), Sorrells

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