US2633122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ophthalmoscope
Assignee: Individual
•
Filing: 1949-06-24
•
Granted: 1953-03-31
•
Expires: 1969-06-24
Abstract
No abstract record available.
Inventors
- 👤 Mauno V Vannas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:48
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)
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US1121667A
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US1235170A
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US1528192A
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US1605725A
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US1961309A
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GB515133A
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US2430851A
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US2524720A
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US2448140A
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US2489902A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |