US3415311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine cooling and passenger compartment heating apparatus for motor vehicles
Assignee: Smiths Group PLC
•
Filing: 1966-09-01
•
Granted: 1968-12-10
•
Expires: 1986-09-01
Abstract
No abstract record available.
Inventors
- 👤 Sheppard Raymond Edwin George
- 👤 Plackett Anthony Geoffrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:57
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00007; B60H1/00021; B60K; B60K11/00; B60K11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1833324A
Cited
US2413770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |