US2598787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torch with concentric gas, oxygen, and mixture outlets
Assignee: Individual
•
Filing: 1948-07-10
•
Granted: 1952-06-03
•
Expires: 1968-07-10
Abstract
No abstract record available.
Inventors
- 👤 Werner H Haak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:09
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1142355A
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US1973371A
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US2054601A
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US2134169A
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US2210402A
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US2367316A
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US2376413A
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US2397165A
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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) | 1955-06-03 | 1955-12-03 | 1956-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-03 | 1959-12-03 | 1960-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-03 | 1963-12-03 | 1964-06-03 | $7700.00 | Window Closed / Lapsed |