US3510202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens carriage for continuously variable magnification stereomicroscope
Assignee: American Optical Corp
•
Filing: 1967-11-13
•
Granted: 1970-05-05
•
Expires: 1987-11-13
Abstract
No abstract record available.
Inventors
- 👤 Olin W Boughton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:20
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/02; G02B7/04; G02B7/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2171360A
Cited
US2942519A
Cited
US3060801A
Cited
US3030861A
Cited
US3057259A
Cited
US3404616A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-04 | 1973-11-03 | 1974-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-04 | 1977-11-03 | 1978-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-04 | 1981-11-03 | 1982-05-05 | $7700.00 | Window Closed / Lapsed |