Patent US3428312A successfully refreshed from Google Patents.
US3428312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exerciser for arms and legs
Assignee: Individual
•
Filing: 1965-10-24
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Granted: 1969-02-18
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Expires: 1985-10-24
Abstract
No abstract record available.
Inventors
- 👤 Valentine Machen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:42
CPC Classifications
A; A63; A63B; A63B23/00; A63B23/035; A63B23/04; A63B23/0482; A63B21/00; A63B21/02; A63B21/04; A63B21/15; A63B21/151; A63B21/154; A63B21/40; A63B21/4001; A63B21/4011; A63B21/4015; A63B2208/00; A63B2208/02; A63B2208/0204
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US418257A
Cited
US848272A
Cited
US955793A
Cited
US1561979A
Cited
FR807392A
Cited
US2223309A
Cited
US3215429A
Cited
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 |