US3587568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inflatable mattress apparatus
Assignee: Westinghouse Electric Corp
•
Filing: 1965-09-20
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Granted: 1971-06-28
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Expires: 1985-09-20
Abstract
Abstract AN INFLATABLE MATTRESS APPARATUS WHEREIN DIFRERENT CELLS ARE ALTERNATELY INFLATED AND DEFLATED IN OUT-OF-PHASE RELATION- SHIP UNDER CONTROL OF A PURE FLUID SELECTOR VALVE DEVICE.
Inventors
- 👤 Eugene P Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:45
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/05; A61G7/057; A61G7/05769; A61G7/05776; Y; Y10; Y10S; Y10S5/00; Y10S5/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |