US2336837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical apparatus
Assignee: A C COSSER Ltd
•
Filing: 1939-05-08
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Granted: 1943-12-14
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Expires: 1959-05-08
Abstract
No abstract record available.
Inventors
- 👤 Bedford Leslie Herbert
- 👤 Stevens Walter Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:01
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/54; H01J29/58; H01J29/64; H01J29/68; H01J29/70; H01J29/72; H01J29/76; H01J29/766
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) | 1946-12-13 | 1947-06-14 | 1947-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-12-13 | 1951-06-14 | 1951-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-12-13 | 1955-06-14 | 1955-12-14 | $7700.00 | Window Closed / Lapsed |