US2880427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible stretcher
Assignee: Individual
•
Filing: 1956-08-28
•
Granted: 1959-04-07
•
Expires: 1976-08-28
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Atwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:27
CPC Classifications
A; A61; A61G; A61G1/00; A61G1/04; A61G1/048; A61G1/013
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US671297A
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US715370A
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US982289A
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US1002108A
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US1035765A
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US1185054A
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US1305388A
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US2544977A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |