US2499073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas safety burner
Assignee: —
•
Filing: —
•
Granted: 1950-02-28
•
Expires: 1967-02-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:13
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/10; F23N1/00; F23N1/005; F23N1/007; F23N5/107; F23N2227/00; F23N2227/22; F23N2235/00; F23N2235/12; F23N2235/14; F23N2235/24; Y; Y10; Y10T; Y10T137/00; Y10T137/1407
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1607343A
Cited
US2042942A
Cited
US2064909A
Cited
US2179633A
Cited
US2363525A
Cited
US1651817A
Cited
US2195903A
Cited
US2163801A
Cited
US2256998A
Cited
US2418867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |