US2694370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moist fuel burning furnace
Assignee: BIGELOW LIPTAK CORP
•
Filing: 1952-01-15
•
Granted: 1954-11-16
•
Expires: 1972-01-15
Abstract
No abstract record available.
Inventors
- 👤 Richard E Smpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:00
CPC Classifications
F; F23; F23B; F23B60/00; F23B70/00; F23G; F23G7/00; F23G7/02; F23B2700/00; F23B2700/011
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |