US3480971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial eyes having a changeable pupil and movable iris portion actuated by muscle tissue
Assignee: Individual
•
Filing: 1967-02-21
•
Granted: 1969-12-02
•
Expires: 1987-02-21
Abstract
No abstract record available.
Inventors
- 👤 Leonard Donald Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:09
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/141
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US303726A
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DE466566C
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US2322117A
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US2302148A
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US2618898A
Cited
US2792573A
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US2854788A
Cited
US3091893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |