Patent US3463144A successfully refreshed from Google Patents.
US3463144A
Expired / Lapsed
US
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Surgical retractor
Assignee: DANIEL O HAMMOND
•
Filing: 1966-06-13
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Granted: 1969-08-26
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Expires: 1986-06-13
Abstract
No abstract record available.
Inventors
- 👤 Daniel O Hammond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:48
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/02; A61B17/0293
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US278520A
Cited
US1400616A
Cited
US1474497A
Cited
US1919120A
Cited
US2863444A
Cited
US3070088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |