US2765702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ophthalmological instrument
Assignee: Individual
•
Filing: 1955-03-11
•
Granted: 1956-10-09
•
Expires: 1975-03-11
Abstract
No abstract record available.
Inventors
- 👤 Sachtleben Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:41
CPC Classifications
A; A61; A61B; A61B3/00; A61B3/10; A61B3/13; A61B3/135
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US864769A
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US1162058A
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US1283884A
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US1721208A
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US1862031A
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DE598550C
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US1958280A
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GB423175A
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US2235319A
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DE843312C
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-09 | 1960-04-09 | 1960-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-09 | 1964-04-09 | 1964-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-09 | 1968-04-09 | 1968-10-09 | $7700.00 | Window Closed / Lapsed |