US2457734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistor for electric discharge devices
Assignee: GTE Sylvania Inc
•
Filing: 1947-02-01
•
Granted: 1948-12-28
•
Expires: 1967-02-01
Abstract
No abstract record available.
Inventors
- 👤 Theodore C Sargent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:04
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1160488A
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US1731267A
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US2243560A
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US2327511A
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US2345300A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-28 | 1952-06-28 | 1952-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-28 | 1956-06-28 | 1956-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-28 | 1960-06-28 | 1960-12-28 | $7700.00 | Window Closed / Lapsed |