Photography and optical equipment – Optical article not elsewhere specified – Lens or objective
Patent
1990-09-11
1992-09-15
Ansher, Bernard
Photography and optical equipment
Optical article not elsewhere specified
Lens or objective
Patent
active
D03294447
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Penwalt Corporation, KYNAR.RTM. Piezo Film Technical Manual, 1987, pp. 1-66.
Ansher Bernard
Barkai R.
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