Patent US2731652A successfully refreshed from Google Patents.
US2731652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air mattress
Assignee: Individual
•
Filing: 1951-06-01
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Granted: 1956-01-24
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Expires: 1971-06-01
Abstract
No abstract record available.
Inventors
- 👤 Edward P Bishop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:55
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/08; A47C27/081; A47C7/00; A47C7/02; A47C7/021; A47C7/36; A47C7/40; A47C7/42; A47C7/425; Y; Y10; Y10S; Y10S297/00; Y10S297/03; Y10S5/00; Y10S5/932
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1269746A
Cited
US1475771A
Cited
FR664102A
Cited
US1970802A
Cited
US2372218A
Cited
US2415150A
Cited
US2582439A
Cited
US2623574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |