US2901714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer
Assignee: Individual
•
Filing: 1955-11-29
•
Granted: 1959-08-25
•
Expires: 1975-11-29
Abstract
No abstract record available.
Inventors
- 👤 William R Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:29
CPC Classifications
H; H01; H01F; H01F30/00; H01F30/06; H01F30/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US508655A
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US1311507A
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US1199092A
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US1435265A
Cited
US1534034A
Cited
US1832616A
Cited
US2493683A
Cited
US2655623A
Cited
US2709791A
Cited
US2694784A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |