US2585050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable transformer
Assignee: BEATRICE GEORGE MARTI
•
Filing: 1949-01-07
•
Granted: 1952-02-12
•
Expires: 1969-01-07
Abstract
No abstract record available.
Inventors
- 👤 Edna M Simon
- 👤 Clarence J Simon
- 👤 Herbert A Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:41
CPC Classifications
H; H01; H01F; H01F29/00; H01F29/08; H01F29/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US742548A
Cited
US1445242A
Cited
US1613222A
Cited
US1471863A
Cited
GB246929A
Cited
US1984939A
Cited
US1790746A
Cited
US1995637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |