US2535916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diagnostic lamp
Assignee: American Optical Corp
•
Filing: 1946-05-11
•
Granted: 1950-12-26
•
Expires: 1966-05-11
Abstract
No abstract record available.
Inventors
- 👤 Albin A Gradisar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:11
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/06; A61B1/0661; A61B1/0669
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1646557A
Cited
US1263234A
Cited
US1779997A
Cited
US1701193A
Cited
US1927222A
Cited
US2038514A
Cited
US2224225A
Cited
US2396998A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-25 | 1954-06-26 | 1954-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-25 | 1958-06-26 | 1958-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-25 | 1962-06-26 | 1962-12-26 | $7700.00 | Window Closed / Lapsed |