Patent US3100640A successfully refreshed from Google Patents.
US3100640A
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US
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Rotary exerciser apparatus
Assignee: Individual
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Filing: 1961-10-30
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Granted: 1963-08-13
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Expires: 1981-10-30
Abstract
No abstract record available.
Inventors
- 👤 John P Weitzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:32
CPC Classifications
A; A63; A63B; A63B22/00; A63B22/06; A63B22/0694; A63B21/00; A63B21/16; A63B21/169; A63B22/0002; A63B22/0005; A63B22/0007; A63B22/0605; A63B2022/0611; A63B2022/0623
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) | 1966-08-12 | 1967-02-11 | 1967-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-12 | 1971-02-11 | 1971-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-12 | 1975-02-11 | 1975-08-13 | $7700.00 | Window Closed / Lapsed |