Patent US2412585A successfully refreshed from Google Patents.
Patent US3112887A successfully refreshed from Google Patents.
US3112887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photografhic and graphic material illuminator
Assignee: —
•
Filing: —
•
Granted: 1963-12-03
•
Expires: 1980-12-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:52
CPC Classifications
—
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
IN A PHOTOGRAPHIC AND GRAPHIC MATERIAL ILLUMINATOR HAVING A SOURCE OF LIGHT AND A TRANSLUCENT SCREEN, THE COMBINATION OF ROTATABLE SPOOLING DRUMS, A FLEXIBLE SHUNTTER WOUND UPON EACH OF SAID SPOOLING DRUMS, MEANS TO ROTATE EACH OF SAID SPOOLING DRUMS TO SELECTIVELY EXPEL FROM EACH SPOOLING DRUM AND REWIND UPON EACH SPOOLING DRUM ITS ASSOCIATED SHUTTER TO JUXTAPOSITION WITH THE SAID TRANSLUCENT SCREEN, A PLURALITY OF FREELY ROTATABLE RODS ARRANGED AROUND EACH SPOOLING DRUM WITH THEIR AXES PARALLEL TO THE AXIS OF SUCH SPOOLING DRUM, GUIDE MEANS TO DIRECT EACH SHUTTER SO THAT AS IT IS UNWOUND FROM ITS SPOOLING DRUM IT WILL REDUCE THE ILLUMINATED AREA OF THE TRANSLUCENT SCREEN.
Claim 2
Dependent Claim
111 words
IN A PHOTOGRAPHIC AND GRAPHIC MATERIAL ILLUMINATOR HAVING A SOURCE OF LIGHT AND A TRANSLUCENT SCREEN, THE COMBINATION OF ROTATABLE SPOOLING DRUMS, A FLEXIBLE SHUNTTER WOUND UPON EACH OF SAID SPOOLING DRUMS, MEANS TO ROTATE EACH OF SAID SPOOLING DRUMS TO SELECTIVELY EXPEL FROM EACH SPOOLING DRUM AND REWIND UPON EACH SPOOLING DRUM ITS ASSOCIATED SHUTTER TO JUXTAPOSITION WITH THE SAID TRANSLUCENT SCREEN, A PLURALITY OF FREELY ROTATABLE RODS ARRANGED AROUND EACH SPOOLING DRUM WITH THEIR AXES PARALLEL TO THE AXIS OF SUCH SPOOLING DRUM, GUIDE MEANS TO DIRECT EACH SHUTTER SO THAT AS IT IS UNWOUND FROM ITS SPOOLING DRUM IT WILL REDUCE THE ILLUMINATED AREA OF THE TRANSLUCENT SCREEN.
References Cited (Backward Citations)
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Cited
US1402176A
Cited
US1729955A
Cited
US1715884A
Cited
US2701838A
Cited
US2817271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |