US2503483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer
Assignee: BBC Brown Boveri AG Germany
•
Filing: 1946-12-03
•
Granted: 1950-04-11
•
Expires: 1966-12-03
Abstract
No abstract record available.
Inventors
- 👤 Hartmann Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:03
CPC Classifications
H; H01; H01F; H01F38/00; H01F38/20; H01F38/22; H01F38/28; H01F38/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US783546A
Cited
US1603058A
Cited
US1889552A
Cited
US1873049A
Cited
GB375507A
Cited
US2288201A
Cited
US2266925A
Cited
US2316558A
Cited
US2409882A
Cited
US2331106A
Cited
US2354500A
Cited
US2452901A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-10 | 1953-10-10 | 1954-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-10 | 1957-10-10 | 1958-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-10 | 1961-10-10 | 1962-04-11 | $7700.00 | Window Closed / Lapsed |