Patent US2531501A successfully refreshed from Google Patents.
US2531501A
Expired / Lapsed
US
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Portable shelter
Assignee: Individual
•
Filing: 1948-11-29
•
Granted: 1950-11-28
•
Expires: 1968-11-29
Abstract
No abstract record available.
Inventors
- 👤 Paul T Cline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:42
CPC Classifications
E; E04; E04H; E04H15/00; E04H15/003; A; A45; A45C; A45C3/00; A45C3/10; A45C9/00; Y; Y10; Y10S; Y10S135/00; Y10S135/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR491000A
Cited
US1805415A
Cited
US1818914A
Cited
AU2832330A
Cited
US2014336A
Cited
US2047035A
Cited
US2290786A
Cited
US2373106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |