US2880718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automotive vehicle heating system
Assignee: Stewart Warner Corp
•
Filing: 1955-08-05
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Granted: 1959-04-07
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Expires: 1975-08-05
Abstract
No abstract record available.
Inventors
- 👤 Frank A Ryder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:16
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/22; B60H1/2203; B60H1/2212; B60H2001/2268; B60H2001/2281; B60H2001/2284
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA474065A
Cited
US2308887A
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US2308888A
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US2263098A
Cited
US2473372A
Cited
US2582827A
Cited
US2588349A
Cited
US2482565A
Cited
US2596290A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |