Patent US2541520A successfully refreshed from Google Patents.
US2541520A
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Method and apparatus for indicate or observe progressive exercise of injured sphincter muscles
Assignee: Individual
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Filing: 1947-01-13
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Granted: 1951-02-13
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Expires: 1967-01-13
Abstract
No abstract record available.
Inventors
- 👤 Arnold H Kegel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:25
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/20; A61B5/202; A61B5/22; A61B5/224; A61B5/227; A61B5/42; A61H; A61H21/00; A63; A63B; A63B23/00; A63B23/20
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) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |