US3447533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure means for artificial body openings
Assignee: RICHARD J SPICER
•
Filing: 1964-09-14
•
Granted: 1969-06-03
•
Expires: 1984-09-14
Abstract
No abstract record available.
Inventors
- 👤 Richard J Spicer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 15:51
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/44; A61F5/445
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2324520A
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US2425841A
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US2435387A
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US2510766A
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US2564399A
Cited
FR1082007A
Cited
US2824558A
Cited
US3098575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |