US2479417A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical insulation
Assignee: Westinghouse Electric Corp
•
Filing: 1945-07-20
•
Granted: 1949-08-16
•
Expires: 1965-07-20
Abstract
No abstract record available.
Inventors
- 👤 Earl L Schulman
- 👤 John S Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:40
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28; H01F27/32; H01F27/323; H01B; H01B3/00; H01B3/02; H01B3/04; H01B3/18; H01B3/30; H01B3/44; H01B7/00; H01B7/02; H01F27/327; H01F41/00; H01F41/02; H01F41/04; H01F41/12; H01F41/122; H01F41/127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1118446A
Cited
US1827571A
Cited
US1842970A
Cited
US2106850A
Cited
US2225034A
Cited
US2341219A
Cited
US2370046A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-15 | 1953-02-14 | 1953-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-15 | 1957-02-14 | 1957-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-15 | 1961-02-14 | 1961-08-16 | $7700.00 | Window Closed / Lapsed |