US2530352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microscope
Assignee: Bausch and Lomb Inc
•
Filing: 1946-10-18
•
Granted: 1950-11-14
•
Expires: 1966-10-18
Abstract
No abstract record available.
Inventors
- 👤 Gallasch Bernhardt George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:54
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/18; G02B21/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1807613A
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US621196A
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US1500030A
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US1690677A
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US1788712A
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US1862031A
Cited
US2003387A
Cited
US1958280A
Cited
GB392077A
Cited
US2048440A
Cited
US2096325A
Cited
US2144653A
Cited
US2365594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-13 | 1954-05-15 | 1954-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-13 | 1958-05-15 | 1958-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-13 | 1962-05-15 | 1962-11-14 | $7700.00 | Window Closed / Lapsed |