Patent US3018518A successfully refreshed from Google Patents.
US3018518A
Expired / Lapsed
US
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Apparatus for expanding one end of a cylindrical air spring into flared form
Assignee: Bridgestone Firestone Inc
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Filing: 1956-12-17
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Granted: 1962-01-30
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Expires: 1976-12-17
Abstract
No abstract record available.
Inventors
- 👤 Alexander G Jefferys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:41
CPC Classifications
B; B29; B29D; B29D22/00; B29D22/02; B29D22/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE361643C
Cited
US948064A
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US1455260A
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US1499679A
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US1768332A
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US1762824A
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US1921594A
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US1757750A
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US1915668A
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US2614952A
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US2715933A
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US2715932A
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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) | 1965-01-29 | 1965-07-31 | 1966-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-29 | 1969-07-31 | 1970-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-29 | 1973-07-31 | 1974-01-30 | $7700.00 | Window Closed / Lapsed |