Patent US947971A successfully refreshed from Google Patents.
US947971A
Expired / Lapsed
US
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Binocular telescope.
Assignee: Carl Zeiss AG
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Filing: 1909-03-25
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Granted: 1910-02-01
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Expires: 1929-03-25
Abstract
No abstract record available.
Inventors
- 👤 Albert Koenig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:33
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/16; G02B23/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1913-01-31 | 1913-08-02 | 1914-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-01-31 | 1917-08-02 | 1918-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-01-31 | 1921-08-02 | 1922-02-01 | $7700.00 | Window Closed / Lapsed |