Photoelectric timer

Details Photoelectric timer Photoelectric timer

1997-03-12

1998-02-17

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Time-measuring instrument or casing

D10 2, 1003

Patent

active

D03907929

REFERENCES:
patent: D298417 (1988-11-01), Sund
patent: D358606 (1995-05-01), Davis
patent: 4712019 (1987-12-01), Nilssen
patent: 4839533 (1989-06-01), Aga
patent: 5430598 (1995-07-01), Rodol
Housewares--Jul. 1-7, 1980--p. 55--Plug Light at middle-right.

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