US2987960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical system for endoscopes and the like
Assignee: Bausch and Lomb Inc
•
Filing: 1958-02-17
•
Granted: 1961-06-13
•
Expires: 1978-02-17
Abstract
No abstract record available.
Inventors
- 👤 Gilbert J Sheldon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:49
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/00163; A61B1/00174; A61B1/00183; G; G02; G02B; G02B23/00; G02B23/24; G02B23/2407; G02B23/2423
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1199731A
Cited
US1270876A
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US1431902A
Cited
GB274912A
Cited
US2002595A
Cited
US2405731A
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US2877368A
Cited
GB774451A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |