Patent US2662444A successfully refreshed from Google Patents.
US2662444A
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Adjustment mechanism for microscopes
Assignee: American Optical Corp
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Filing: 1950-03-14
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Granted: 1953-12-15
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Expires: 1970-03-14
Abstract
No abstract record available.
Inventors
- 👤 Albin A Gradisar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:19
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/24; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18288; Y10T74/18992
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1933386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |