Patent US2939677A successfully refreshed from Google Patents.
US2939677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bead spreader for a tire in a retreading mold
Assignee: Super Mold Corp of California
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Filing: 1957-07-22
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Granted: 1960-06-07
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Expires: 1977-07-22
Abstract
No abstract record available.
Inventors
- 👤 Duerksen Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:25
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/52; B29D30/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1848961A
Cited
US2007870A
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US2259975A
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US2212059A
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US2223915A
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US2264633A
Cited
GB599037A
Cited
US2525114A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |