US2534754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control circuit
Assignee: Westinghouse Electric Corp
•
Filing: 1945-10-31
•
Granted: 1950-12-19
•
Expires: 1965-10-31
Abstract
No abstract record available.
Inventors
- 👤 John L Boyer
- 👤 William E Pakala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:33
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/24; B23K11/248
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1954661A
Cited
US1957230A
Cited
US2319524A
Cited
US2356859A
Cited
US2385214A
Cited
US2337982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-18 | 1954-06-19 | 1954-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-18 | 1958-06-19 | 1958-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-18 | 1962-06-19 | 1962-12-19 | $7700.00 | Window Closed / Lapsed |