US1495870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined firing valve, heater, and blowback apparatus for oil-fuelburning installations
Assignee: Individual
•
Filing: 1922-01-16
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Granted: 1924-05-27
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Expires: 1942-01-16
Abstract
No abstract record available.
Inventors
- 👤 O'donnell James
- 👤 Mcleod Peter Fraser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:39
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/072; F16K11/074; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86558; Y10T137/86718; Y10T137/86743
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) | 1927-05-27 | 1927-11-26 | 1928-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-05-27 | 1931-11-26 | 1932-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-05-27 | 1935-11-26 | 1936-05-27 | $7700.00 | Window Closed / Lapsed |