US1726206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crank-case-oil heater
Assignee: ALBERT THOMPSON E
•
Filing: 1929-01-09
•
Granted: 1929-08-27
•
Expires: 1949-01-09
Abstract
No abstract record available.
Inventors
- 👤 Victor N Albertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:16
CPC Classifications
F; F01; F01M; F01M5/00; F01M5/02; F01M5/021
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) | 1932-08-26 | 1933-02-25 | 1933-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-08-26 | 1937-02-25 | 1937-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-08-26 | 1941-02-25 | 1941-08-27 | $7700.00 | Window Closed / Lapsed |