Patent US4670185A successfully refreshed from Google Patents.
Patent US2275167A successfully refreshed from Google Patents.
US2275167A
Expired / Lapsed
US
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Electrosurgical instrument
Assignee: Individual
•
Filing: 1939-04-26
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Granted: 1942-03-03
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Expires: 1959-04-26
Abstract
No abstract record available.
Inventors
- 👤 Bierman William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:05
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1402; A61B17/00; A61B17/30; A61B2017/306; A61B2018/00053; A61B2018/00273; A61B2018/00291; A61B2018/0091; A61B2018/00916; A61B2018/00928; A61B2018/00934; A61M; A61M1/00; A61M1/08; A61M1/71; A61M1/74; A61M1/741; A61M1/7411
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-03-02 | 1945-09-01 | 1946-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-03-02 | 1949-09-01 | 1950-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-03-02 | 1953-09-01 | 1954-03-03 | $7700.00 | Window Closed / Lapsed |