US2108507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Correlative temperature control system
Assignee: Vapor Car Heating Co Inc
•
Filing: 1936-09-18
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Granted: 1938-02-15
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Expires: 1956-09-18
Abstract
No abstract record available.
Inventors
- 👤 Paul B Parks
- 👤 William M Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:45
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/275; G05D23/27535; G05D23/27539
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-02-14 | 1941-08-16 | 1942-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-02-14 | 1945-08-16 | 1946-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-02-14 | 1949-08-16 | 1950-02-15 | $7700.00 | Window Closed / Lapsed |