US2851584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for monitoring welds
Assignee: Welding Research Inc
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Filing: 1956-11-08
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Granted: 1958-09-09
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Expires: 1976-11-08
Abstract
No abstract record available.
Inventors
- 👤 Sciaky David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:47
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/24; B23K11/248; B23K11/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |