US2621923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber spring
Assignee: Goodrich Corp
•
Filing: 1947-03-01
•
Granted: 1952-12-16
•
Expires: 1967-03-01
Abstract
No abstract record available.
Inventors
- 👤 Alvin S Krotz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:59
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/36; F16F1/38; F16F1/387; Y; Y10; Y10T; Y10T403/00; Y10T403/45; Y10T403/455
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1827268A
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GB303260A
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US1835575A
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FR680434A
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US1835013A
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US2226406A
Cited
US2251698A
Cited
US2246847A
Cited
GB586192A
Cited
US2509145A
Cited
US2562381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |