US2845998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilated chair seats
Assignee: Individual
•
Filing: 1956-04-27
•
Granted: 1958-08-05
•
Expires: 1976-04-27
Abstract
No abstract record available.
Inventors
- 👤 Robert J Estabrook
- 👤 Norman J Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:19
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/16; Y; Y10; Y10S; Y10S297/00; Y10S297/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2525670A
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US2488728A
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US2542931A
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US2646840A
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US2750996A
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US2693848A
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US2775287A
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US2744567A
Cited
US2696872A
Cited
US2713892A
Cited
US2760562A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |