US2000354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and means for charging barometric feed devices
Assignee: Silent Glow Oil Burner Corp
•
Filing: 1932-04-20
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Granted: 1935-05-07
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Expires: 1952-04-20
Abstract
No abstract record available.
Inventors
- 👤 Rallston M Sherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:33
CPC Classifications
F; F23; F23K; F23K5/00; F23K5/02; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0396; Y10T137/7287; Y10T137/7498; Y10T137/8593; Y10T137/85978; Y10T137/86035
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) | 1938-05-06 | 1938-11-05 | 1939-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-05-06 | 1942-11-05 | 1943-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-05-06 | 1946-11-05 | 1947-05-07 | $7700.00 | Window Closed / Lapsed |