US2461731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preheating liquid fuel torch
Assignee: Individual
•
Filing: 1945-06-06
•
Granted: 1949-02-15
•
Expires: 1965-06-06
Abstract
No abstract record available.
Inventors
- 👤 Carl R Guth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:30
CPC Classifications
F; F23; F23D; F23D99/00; F23D99/002; F23D99/004; F23D2206/00; F23D2206/0031; F23D2206/0057
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1695334A
Cited
US957143A
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US1148803A
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US1140621A
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US1281345A
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US1208341A
Cited
AU35326A
Cited
US1487239A
Cited
GB259044A
Cited
US1964898A
Cited
FR729034A
Cited
US2267104A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-15 | 1952-08-16 | 1953-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-15 | 1956-08-16 | 1957-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-15 | 1960-08-16 | 1961-02-15 | $7700.00 | Window Closed / Lapsed |