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US2747152A
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US
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Torch spacing control
Assignee: Airco Inc
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Filing: 1951-08-01
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Granted: 1956-05-22
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Expires: 1971-08-01
Abstract
No abstract record available.
Inventors
- 👤 William J Greene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:27
CPC Classifications
B; B23; B23K; B23K7/00; B23K7/10; B23K7/102
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2357745A
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US2593339A
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US2437661A
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US2611115A
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US2508752A
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US2534958A
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US2576611A
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US2560165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |