US3428311A
Expired / Lapsed
US
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Resistance exerciser for wrists,arms,and upper body
Assignee: THORAL J MITCHELL
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Filing: 1966-04-01
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Granted: 1969-02-18
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Expires: 1986-04-01
Abstract
No abstract record available.
Inventors
- 👤 Thoral J Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:52
CPC Classifications
A; A63; A63B; A63B23/00; A63B23/035; A63B23/12; A63B21/00; A63B21/012; A63B21/015; A63B21/40; A63B21/4027; A63B21/4033; A63B21/4035; A63B21/4041; A63B21/4047; A63B23/03508; A63B23/1209; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/20612
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) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |