US2513705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety and condition control device for gaseous fuel burners
Assignee: Robertshaw Controls Co
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Filing: 1947-11-04
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Granted: 1950-07-04
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Expires: 1967-11-04
Abstract
No abstract record available.
Inventors
- 👤 Thomas T Arden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:33
CPC Classifications
F; F23; F23Q; F23Q9/00; F23Q9/08; F23Q9/12; Y; Y10; Y10T; Y10T137/00; Y10T137/1407; Y10T137/1516
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-03 | 1954-01-02 | 1954-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-03 | 1958-01-02 | 1958-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-03 | 1962-01-02 | 1962-07-04 | $7700.00 | Window Closed / Lapsed |