US2810323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anamorphotic optical systems
Assignee: Taylor Taylor and Hobson Ltd
•
Filing: 1954-05-17
•
Granted: 1957-10-22
•
Expires: 1974-05-17
Abstract
No abstract record available.
Inventors
- 👤 Coleman Kenneth Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:57
CPC Classifications
G; G02; G02B; G02B13/00; G02B13/08; G02B13/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1307598A
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US818553A
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US1758801A
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US1931992A
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GB338962A
Cited
US1918488A
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US1898787A
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US1932082A
Cited
US2048284A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |