Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1981-08-31
1983-10-11
Corrigan, Jane E.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D14 11, D1603, D1699
Patent
active
D02709147
REFERENCES:
patent: D216564 (1970-02-01), Kalvitis
patent: 2905767 (1959-09-01), Eckert et al.
patent: 3731289 (1973-05-01), Bajgert et al.
patent: 4257079 (1981-03-01), Yoshizawa
patent: 4266256 (1981-05-01), Kato et al.
IBM Technical Disclosure Bulletin, vol. 21, #3, 8/78, pp. 978 & 979.
Corrigan Jane E.
Funk Joseph E.
Shanahan Michael H.
Wang Laboratories, Inc.
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