Patent US2432050A successfully refreshed from Google Patents.
US2452189A
Expired / Lapsed
US
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Universal torch machine
Assignee: Airco Inc
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Filing: 1944-10-09
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Granted: 1948-10-26
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Expires: 1964-10-09
Abstract
No abstract record available.
Inventors
- 👤 Richard F Helmkamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:06
CPC Classifications
B; B23; B23K; B23K5/00; B23K5/02; B23K5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2183605A
Cited
US1162587A
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GB230571A
Cited
US2032733A
Cited
US2085112A
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US2278607A
Cited
US2403514A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-26 | 1952-04-26 | 1952-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-26 | 1956-04-26 | 1956-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-26 | 1960-04-26 | 1960-10-26 | $7700.00 | Window Closed / Lapsed |