Patent US3057768A successfully refreshed from Google Patents.
US3057768A
Expired / Lapsed
US
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Method of forming an air spring of rubberized fabric plies
Assignee: Bridgestone Firestone Inc
•
Filing: 1957-01-07
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Granted: 1962-10-09
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Expires: 1977-01-07
Abstract
No abstract record available.
Inventors
- 👤 D Arle L Mcgough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:07
CPC Classifications
B; B29; B29D; B29D22/00; B29D22/02; B29D22/023; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1008; Y10T156/1011; Y10T156/1028; Y10T156/103; Y10T156/1051
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |