US3019705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coarse and fine adjustment mechanism for microscopes
Assignee: American Optical Corp
•
Filing: 1957-12-13
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Granted: 1962-02-06
•
Expires: 1977-12-13
Abstract
No abstract record available.
Inventors
- 👤 Leonard A Wilkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:53
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/24; G02B21/241; G02B21/242
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2877651A
Cited
US2167677A
Cited
US2148576A
Cited
DE951537C
Cited
US2869373A
Cited
DE930179C
Cited
US2828649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |