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US2879689A
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Ocular biomicroscopes
Assignee: Individual
•
Filing: 1955-07-19
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Granted: 1959-03-31
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Expires: 1975-07-19
Abstract
No abstract record available.
Inventors
- 👤 Gambs Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:00
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/18; G02B21/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US785439A
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US1721208A
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US1693979A
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US1953738A
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US2765702A
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DE843312C
Cited
GB662940A
Cited
US2622473A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |