US2754722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite optical image projection apparatus
Assignee: Individual
•
Filing: 1954-01-21
•
Granted: 1956-07-17
•
Expires: 1974-01-21
Abstract
No abstract record available.
Inventors
- 👤 Thomas B Howell
- 👤 Rogin Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:19
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/74; H04N5/7416; H04N5/7425
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US595541A
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US724452A
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US887839A
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US941752A
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US1282743A
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US2061378A
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US2155248A
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US2365613A
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US2406451A
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US2456296A
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US2477923A
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US2484405A
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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) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |