Patent DE1006086B successfully refreshed from Google Patents.
Patent US2353865A successfully refreshed from Google Patents.
US2353865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas burner
Assignee: Individual
•
Filing: 1940-11-28
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Granted: 1944-07-18
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Expires: 1960-11-28
Abstract
No abstract record available.
Inventors
- 👤 Leslie R Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:01
CPC Classifications
F; F23; F23D; F23D14/00; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86292; Y10T137/863; Y10T137/87571; Y10T137/87587; Y10T137/87603
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) | 1947-07-18 | 1948-01-17 | 1948-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-07-18 | 1952-01-17 | 1952-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-07-18 | 1956-01-17 | 1956-07-18 | $7700.00 | Window Closed / Lapsed |