US2699158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical apparatus
Assignee: —
•
Filing: —
•
Granted: 1955-01-11
•
Expires: 1972-01-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:18
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/96; H01T; H01T13/00; H01T13/20; H01T13/22; H01T4/00; H01T4/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191022517A
Cited
US2155481A
Cited
GB536460A
Cited
US2272558A
Cited
US2359421A
Cited
US2356104A
Cited
US2471070A
Cited
US2507278A
Cited
US2527489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-10 | 1958-07-12 | 1959-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-10 | 1962-07-12 | 1963-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-10 | 1966-07-12 | 1967-01-11 | $7700.00 | Window Closed / Lapsed |