Electronic flash unit

Details Electronic flash unit Electronic flash unit

1975-07-31

1977-12-06

Burke, Wallace R.

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

D1605

Patent

active

D02465892

REFERENCES:
patent: D210052 (1968-01-01), Ackerman
patent: D212173 (1968-09-01), Ackermann
patent: D229099 (1973-11-01), Quinn
patent: D232773 (1974-09-01), Kato
patent: D233257 (1974-10-01), Holtje

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