US2612938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable back rest
Assignee: Individual
•
Filing: 1950-07-24
•
Granted: 1952-10-07
•
Expires: 1970-07-24
Abstract
No abstract record available.
Inventors
- 👤 Henry E Dawkins
- 👤 Sheldon T Dodin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:58
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/36; A47C7/40; A47C7/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1493467A
Cited
US1679238A
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US1909901A
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US1949113A
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US2324570A
Cited
US2383041A
Cited
US2480310A
Cited
US2491784A
Cited
US2518057A
Cited
US2542477A
Cited
US2545679A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |