US2884830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sighting device for electro-optical distance meters
Assignee: Askania Werke AG
•
Filing: 1956-11-21
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Granted: 1959-05-05
•
Expires: 1976-11-21
Abstract
No abstract record available.
Inventors
- 👤 Hildebrand Klaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:37
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/07; G02B; G02B27/00; G02B27/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US578459A
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US1290744A
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US1386666A
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US1505878A
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US1712112A
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US1893158A
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US2153709A
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US2234329A
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US2490899A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |