US2224733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus for spot or seam welding by means of controllable discharge vessels
Assignee: Westinghouse Electric Corp
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Filing: 1938-02-05
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Granted: 1940-12-10
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Expires: 1958-02-05
Abstract
No abstract record available.
Inventors
- 👤 Konig Herbert
- 👤 Meenen Walter
- 👤 Schnarz Richard
- 👤 Wilbert Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:17
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/24; B23K11/248
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-12-10 | 1944-06-10 | 1944-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-12-10 | 1948-06-10 | 1948-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-12-10 | 1952-06-10 | 1952-12-10 | $7700.00 | Window Closed / Lapsed |