US2774136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torch welding
Assignee: Callery Chemical Co
•
Filing: 1953-01-13
•
Granted: 1956-12-18
•
Expires: 1973-01-13
Abstract
No abstract record available.
Inventors
- 👤 William H Schechter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:55
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2181094A
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US2211448A
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US2235965A
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US2262187A
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US2295702A
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US2277064A
Cited
US2327337A
Cited
US2629732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |