Patent US2821244A successfully refreshed from Google Patents.
US2821244A
Expired / Lapsed
US
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Resilient cushion
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1955-11-23
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Granted: 1958-01-28
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Expires: 1975-11-23
Abstract
No abstract record available.
Inventors
- 👤 Howard G Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:32
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/70; B60N2/7023; B60N2/7035; B60N2/7047; B60N2/7052; A; A47; A47C; A47C7/00; A47C7/02; A47C7/18; Y; Y10; Y10S; Y10S297/00; Y10S297/01; Y10S297/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-27 | 1961-07-29 | 1962-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-27 | 1965-07-29 | 1966-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-27 | 1969-07-29 | 1970-01-28 | $7700.00 | Window Closed / Lapsed |