Patent US2525055A successfully refreshed from Google Patents.
US2525055A
Expired / Lapsed
US
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Heating and hardening burner
Assignee: National Cylinder Gas Co
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Filing: 1945-04-27
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Granted: 1950-10-10
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Expires: 1965-04-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Bert G Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:47
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/48; F23D14/52; F23D14/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US804002A
Cited
GB198801A
Cited
US1907604A
Cited
US1942352A
Cited
US1957587A
Cited
US2356196A
Cited
US2356197A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |