US2988043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the projection of images
Assignee: Individual
•
Filing: 1957-11-21
•
Granted: 1961-06-13
•
Expires: 1977-11-21
Abstract
No abstract record available.
Inventors
- 👤 Sassenberg Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:53
CPC Classifications
G; G03; G03D; G03D15/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US861309A
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US1279961A
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US1208664A
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US1205039A
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US2184610A
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US2340204A
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US2408438A
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US2551329A
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DE848908C
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US2713006A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |