US2672291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace control means
Assignee: LUCSON Corp
•
Filing: 1950-06-08
•
Granted: 1954-03-16
•
Expires: 1970-06-08
Abstract
No abstract record available.
Inventors
- 👤 William V Rifle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:13
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/20; F24H9/2064; F24H9/2085; F24H15/00; F24H15/30; F24H15/305; F24H15/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1407411A
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US1711660A
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US1836567A
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US1969113A
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US2121977A
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US2288890A
Cited
US2266563A
Cited
US2381799A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-15 | 1957-09-14 | 1958-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-15 | 1961-09-14 | 1962-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-15 | 1965-09-14 | 1966-03-16 | $7700.00 | Window Closed / Lapsed |