US1858265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Burner control system
Assignee: Perfection Stove Co
•
Filing: 1930-01-18
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Granted: 1932-05-17
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Expires: 1950-01-18
Abstract
No abstract record available.
Inventors
- 👤 Dahlstrom John Alger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:30
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/16; G01K7/18; F; F23; F23N; F23N1/00; G01K7/22
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) | 1935-05-17 | 1935-11-16 | 1936-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-05-17 | 1939-11-16 | 1940-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-05-17 | 1943-11-16 | 1944-05-17 | $7700.00 | Window Closed / Lapsed |