US2377600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconducting composition
Assignee: Westinghouse Electric Corp
•
Filing: 1943-02-10
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Granted: 1945-06-05
•
Expires: 1963-02-10
Abstract
No abstract record available.
Inventors
- 👤 Harry H Barker
- 👤 Lawrence R Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:29
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; C; C08; C08K; C08K3/00; C08K3/02; C08K3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-06-04 | 1948-12-04 | 1949-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-06-04 | 1952-12-04 | 1953-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-06-04 | 1956-12-04 | 1957-06-05 | $7700.00 | Window Closed / Lapsed |