US2500604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protector for traversing screw on microscope stage
Assignee: Bausch and Lomb Inc
•
Filing: 1946-08-31
•
Granted: 1950-03-14
•
Expires: 1966-08-31
Abstract
No abstract record available.
Inventors
- 👤 Daniel Eberhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:08
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/24; G02B21/26; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30868; Y10T74/00; Y10T74/21; Y10T74/219
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US895093A
Cited
US1080968A
Cited
US1981713A
Cited
US2119354A
Cited
US2265182A
Cited
US2375408A
Cited
US2409288A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |