Patent US3999126A successfully refreshed from Google Patents.
US1910012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve mechanism for controlling heating burners
Assignee: Individual
•
Filing: 1929-01-19
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Granted: 1933-05-23
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Expires: 1949-01-19
Abstract
No abstract record available.
Inventors
- 👤 Edward S Halsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:37
CPC Classifications
F; F16; F16K; F16K13/00; F16K13/08; F16K13/10; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/4456; Y10T137/4643; Y10T137/4658
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) | 1936-05-22 | 1936-11-21 | 1937-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-05-22 | 1940-11-21 | 1941-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-05-22 | 1944-11-21 | 1945-05-23 | $7700.00 | Window Closed / Lapsed |