1982-11-29
1984-03-20
Adams, Russell E.
354286, G03B 1700
Patent
active
044377525
ABSTRACT:
The disclosed safety device electrically senses the conductivity between the electrical contacts of a camera and an accessory attached thereto, and, upon detection of a failure in conductivity, produces a warning signal for the user.
REFERENCES:
patent: 4023153 (1977-05-01), Adachi
patent: 4092656 (1978-05-01), Lang et al.
patent: 4130358 (1978-12-01), Lang et al.
Akashi Akira
Kamata Shigeru
Katsuma Makoto
Kawamura Masaharu
Saito Syuichiro
Adams Russell E.
Canon Kabushiki Kaisha
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