Patent US1981379A successfully refreshed from Google Patents.
US1981379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exercising appliance
Assignee: Individual
•
Filing: 1933-04-08
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Granted: 1934-11-20
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Expires: 1953-04-08
Abstract
No abstract record available.
Inventors
- 👤 John M Thomson
- 👤 John F Mulhern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:30
CPC Classifications
A; A63; A63B; A63B23/00; A63B23/035; A63B23/04; A63B23/10; A61; A61H; A61H2201/00; A61H2201/12; A61H2201/1253; A61H2201/1261; A61H2201/1284; A61H7/00; A61H7/001
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) | 1937-11-19 | 1938-05-21 | 1938-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-11-19 | 1942-05-21 | 1942-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-11-19 | 1946-05-21 | 1946-11-20 | $7700.00 | Window Closed / Lapsed |