Patent US2893172A successfully refreshed from Google Patents.
US2893172A
Expired / Lapsed
US
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Sidewall buffing machine for pneumatic tires
Assignee: Seiberling Rubber Co
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Filing: 1957-09-17
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Granted: 1959-07-07
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Expires: 1977-09-17
Abstract
No abstract record available.
Inventors
- 👤 Edwin P Schrank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:07
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/0601; B29D30/0633; B24; B24B; B24B5/00; B24B5/36; B24B5/366; B29D2030/0634; B29D2030/0635
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-06 | 1963-01-05 | 1963-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-06 | 1967-01-05 | 1967-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-06 | 1971-01-05 | 1971-07-07 | $7700.00 | Window Closed / Lapsed |