US2547452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical distribution system
Assignee: Westinghouse Electric Corp
•
Filing: 1949-06-16
•
Granted: 1951-04-03
•
Expires: 1969-06-16
Abstract
No abstract record available.
Inventors
- 👤 William W Edson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:37
CPC Classifications
H; H02; H02J; H02J3/00; H02J3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1815842A
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US1814684A
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US1815824A
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US1916925A
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US1896399A
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US1900494A
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US2168177A
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US2300465A
Cited
US2354138A
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US2321444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |