US2929909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric heating element and method of and apparatus for producing it
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1957-02-15
•
Granted: 1960-03-22
•
Expires: 1977-02-15
Abstract
No abstract record available.
Inventors
- 👤 Thomas B Gibbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:08
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/52; B29D30/54; B29C; B29C35/00; B29C35/02; B29C2035/0211
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1839877A
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US2510041A
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US2585443A
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US2610286A
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US2801443A
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US2771537A
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US2802091A
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US2783171A
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US2809268A
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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) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |