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US2643392A
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Artificial eye
Assignee: American Optical Corp
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Filing: 1945-03-29
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Granted: 1953-06-30
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Expires: 1965-03-29
Abstract
No abstract record available.
Inventors
- 👤 Rudolph E Busch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:45
CPC Classifications
B; B29; B29D; B29D11/00; B29D11/02; A; A61; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/141
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |