US1856408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic stop valve for oil burners
Assignee: E S HAMMOND Inc
•
Filing: 1928-05-03
•
Granted: 1932-05-03
•
Expires: 1948-05-03
Abstract
No abstract record available.
Inventors
- 👤 Brear Owen Wesley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:27
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/36; F23D11/46; F23N; F23N2239/00; F23N2239/06; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2708; Y10T137/271
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) | 1935-05-03 | 1935-11-02 | 1936-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-05-03 | 1939-11-02 | 1940-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-05-03 | 1943-11-02 | 1944-05-03 | $7700.00 | Window Closed / Lapsed |