Patent US2811895A successfully refreshed from Google Patents.
US2811895A
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US
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Universal drive for the focusing of binocular optical apparatus, especially telescopes
Assignee: Ernst Leitz Wetzlar GmbH
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Filing: 1955-01-26
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Granted: 1957-11-05
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Expires: 1975-01-26
Abstract
No abstract record available.
Inventors
- 👤 Jensen Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:15
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/02; G02B7/04; G02B7/06; G02B7/28; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18752
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE543332C
Cited
GB190404701A
Cited
US1338241A
Cited
FR973186A
Cited
US2581865A
Cited
US2602371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |