US2924831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination stretcher and mountaineer's back pack frame
Assignee: Individual
•
Filing: 1958-04-09
•
Granted: 1960-02-16
•
Expires: 1978-04-09
Abstract
No abstract record available.
Inventors
- 👤 George D Hankins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:24
CPC Classifications
A; A47; A47C; A47C17/00; A47C17/64; A47C17/80; A61; A61G; A61G1/00; A61G1/013
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US47719A
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US285890A
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US611270A
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GB190621489A
Cited
GB191014198A
Cited
GB190925966A
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DE527801C
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CH232777A
Cited
US2503314A
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US2639442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |