US1665443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil-burning system
Assignee: Individual
•
Filing: 1928-01-30
•
Granted: 1928-04-10
•
Expires: 1948-01-30
Abstract
No abstract record available.
Inventors
- 👤 John W Cannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:54
CPC Classifications
F; F23; F23K; F23K5/00; F23K5/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86686
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) | 1931-04-10 | 1931-10-10 | 1932-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-04-10 | 1935-10-10 | 1936-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-04-10 | 1939-10-10 | 1940-04-10 | $7700.00 | Window Closed / Lapsed |