Patent US2724428A successfully refreshed from Google Patents.
US2724428A
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US
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Combined seat and exerciser
Assignee: Individual
•
Filing: 1954-05-20
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Granted: 1955-11-22
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Expires: 1974-05-20
Abstract
No abstract record available.
Inventors
- 👤 John W Sellner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:32
CPC Classifications
A; A47; A47C; A47C17/00; A47C17/64; A47C17/70; A47C17/705; A63; A63B; A63B2208/00; A63B2208/02; A63B2208/0242; A63B2208/0252; A63B2208/0257; A63B2210/00; A63B2210/50; A63B23/00; A63B23/02; A63B23/0205; A63B23/0211; A63B23/0233
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) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |