US2544749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic pressure welding apparatus
Assignee: Linde Air Products Co
•
Filing: 1946-08-27
•
Granted: 1951-03-13
•
Expires: 1966-08-27
Abstract
No abstract record available.
Inventors
- 👤 John P Cowie
- 👤 Charles J Burch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:01
CPC Classifications
B; B23; B23K; B23K5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US627385A
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US2061287A
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US2029335A
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US2392824A
Cited
US2302353A
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US2376765A
Cited
US2338305A
Cited
US2434352A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |