US2800284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control and indicating device for fluid fuel burners
Assignee: Robertshaw Controls Co
•
Filing: 1955-03-25
•
Granted: 1957-07-23
•
Expires: 1975-03-25
Abstract
No abstract record available.
Inventors
- 👤 Weber Victor
- 👤 Russell F Garner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:15
CPC Classifications
F; F23; F23N; F23N1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2237577A
Cited
US1177857A
Cited
FR546591A
Cited
GB344641A
Cited
US1770365A
Cited
US2006882A
Cited
US2197473A
Cited
US2361530A
Cited
US2641750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |