US2833946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High altitude electrical equipment
Assignee: British Thomson Houston Co Ltd
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Filing: 1955-04-01
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Granted: 1958-05-06
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Expires: 1975-04-01
Abstract
No abstract record available.
Inventors
- 👤 Anderson Trevor James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:27
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/18; H01R39/20; H01R39/22; H01R39/38; H01R39/40; H01R43/00; H01R43/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |