US2701852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low frequency seam welder control
Assignee: Westinghouse Electric Corp
•
Filing: 1950-09-15
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Granted: 1955-02-08
•
Expires: 1970-09-15
Abstract
No abstract record available.
Inventors
- 👤 John R Parsons
- 👤 Hubert W Van Ness
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:10
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/24; B23K11/248
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2166305A
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US2232541A
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US2290543A
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US2267398A
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US2443660A
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US2498491A
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US2476849A
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US2520476A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-07 | 1958-08-09 | 1959-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-07 | 1962-08-09 | 1963-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-07 | 1966-08-09 | 1967-02-08 | $7700.00 | Window Closed / Lapsed |