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US2370514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ophthalmoscope
Assignee: Individual
•
Filing: 1942-06-16
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Granted: 1945-02-27
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Expires: 1962-06-16
Abstract
No abstract record available.
Inventors
- 👤 Walter A Arnesen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:16
CPC Classifications
A; A61; A61B; A61B3/00; A61B3/10; A61B3/12; A61B3/1208
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-02-27 | 1948-08-28 | 1949-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-02-27 | 1952-08-28 | 1953-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-02-27 | 1956-08-28 | 1957-02-27 | $7700.00 | Window Closed / Lapsed |