Patent US2950646A successfully refreshed from Google Patents.
US2950646A
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US
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Blinds for light apertures in combined camera and projector apparatus and operating mechanism therefor and for shifting shutter means
Assignee: A KIP LIVINGSTON
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Filing: 1958-02-28
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Granted: 1960-08-30
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Expires: 1978-02-28
Abstract
No abstract record available.
Inventors
- 👤 Blank Fritz Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:00
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/08; G03B9/10; G03B21/00; G03B21/14; G03B21/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1309798A
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US1377322A
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US1466774A
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US1562283A
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US1536347A
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US2148493A
Cited
US2226175A
Cited
US2443601A
Cited
US2819647A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |