US2579195A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Focusing mechanism for microscopes
Assignee: Bausch and Lomb Inc
•
Filing: 1948-10-20
•
Granted: 1951-12-18
•
Expires: 1968-10-20
Abstract
No abstract record available.
Inventors
- 👤 John C Kurtz
- 👤 Gallasch Bernhardt George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:25
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/24; G02B21/241; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/1967
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US347377A
Cited
US382964A
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GB190813242A
Cited
US1333490A
Cited
GB194099A
Cited
US2410643A
Cited
US2449156A
Cited
US2544371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |