Patent US2856989A successfully refreshed from Google Patents.
US2856989A
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Spring cushion construction
Assignee: Rockwell-Standard Corp
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Filing: 1956-07-06
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Granted: 1958-10-21
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Expires: 1976-07-06
Abstract
No abstract record available.
Inventors
- 👤 Edward T Pawlikowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:55
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/28; A47C7/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2574572A
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US2643705A
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US2636544A
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US2702588A
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US2629430A
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US2666477A
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US2705527A
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US2669293A
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US2815797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |