US1571300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making transformer tanks
Assignee: Westinghouse Electric Corp
•
Filing: 1920-12-30
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Granted: 1926-02-02
•
Expires: 1940-12-30
Abstract
No abstract record available.
Inventors
- 👤 Emerson G Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:49
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/02; B21D53/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49366
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) | 1929-02-01 | 1929-08-03 | 1930-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-02-01 | 1933-08-03 | 1934-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-02-01 | 1937-08-03 | 1938-02-02 | $7700.00 | Window Closed / Lapsed |