Overhead projector having an inverted head

Photography and optical equipment – Projector or viewer – Overhead or opaque type

Design Patent

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Design Patent

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D0473254

CLAIM:
The ornamental design for an overhead projector having an inverted head, as shown and described.

REFERENCES:
patent: D221901 (1971-09-01), Patla
patent: 3979160 (1976-09-01), Anderson et al.
patent: D244602 (1977-06-01), Mango et al.
patent: D322264 (1991-12-01), Jewison
patent: D349715 (1994-08-01), Darland
patent: D350361 (1994-09-01), Hasegawa

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