US1267185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel-heater for gas-engines.
Assignee: Individual
•
Filing: 1916-06-03
•
Granted: 1918-05-21
•
Expires: 1936-06-03
Abstract
No abstract record available.
Inventors
- 👤 Robert L Coffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:36
CPC Classifications
F; F28; F28F; F28F27/00; F28F27/02; F28D; F28D21/00; F28D21/0001; F28D21/0003; Y; Y10; Y10S; Y10S165/00; Y10S165/092; Y10S165/109; Y10S165/12; Y10S165/122
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) | 1921-05-20 | 1921-11-19 | 1922-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-05-20 | 1925-11-19 | 1926-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-05-20 | 1929-11-19 | 1930-05-21 | $7700.00 | Window Closed / Lapsed |