US2904833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double acting sealing ring for vulcanizing pneumatic tires
Assignee: Cleveland Trust Co
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Filing: 1956-07-30
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Granted: 1959-09-22
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Expires: 1976-07-30
Abstract
No abstract record available.
Inventors
- 👤 Adolf H Frohlich
- 👤 Edward J Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:05
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/0601; B29D30/0602; B29D30/0606; B29D2030/0607; B29D2030/062; B29D2030/0621; B29D2030/0622; B29D2030/0627
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) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |