Patent US2960912A successfully refreshed from Google Patents.
US2960912A
Expired / Lapsed
US
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Alignment telescope with lens arrangement for infinity focus adjustment
Assignee: Kenffel & Esser Co
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Filing: 1957-04-29
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Granted: 1960-11-22
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Expires: 1977-04-29
Abstract
No abstract record available.
Inventors
- 👤 Allister L Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:38
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE317429C
Cited
DE340836C
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FR810976A
Cited
US2424257A
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US2588974A
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US2682804A
Cited
US2784641A
Cited
GB749690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |