Patent US2571184A successfully refreshed from Google Patents.
US2571184A
Expired / Lapsed
US
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Zigzag spring seat
Assignee: Goodyear Aircraft Corp
•
Filing: 1946-10-26
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Granted: 1951-10-16
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Expires: 1966-10-26
Abstract
No abstract record available.
Inventors
- 👤 Ralph C Bateman
- 👤 Benjamin J Schnitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:29
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/28; A47C7/287
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2364499A
Cited
US2185036A
Cited
CH206149A
Cited
US2308772A
Cited
US2341015A
Cited
US2386456A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-15 | 1955-04-16 | 1955-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-15 | 1959-04-16 | 1959-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-15 | 1963-04-16 | 1963-10-16 | $7700.00 | Window Closed / Lapsed |