Patent US2445989A successfully refreshed from Google Patents.
US2445989A
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Starting and operating unit and circuit for gaseous electric discharge devices
Assignee: MAXWELL M BILOFSKY
•
Filing: 1945-05-22
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Granted: 1948-07-27
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Expires: 1965-05-22
Abstract
No abstract record available.
Inventors
- 👤 Maynard A Babb
- 👤 Arnold E Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:15
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/02; H05B41/04; H05B41/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1788970A
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US2160823A
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US2285450A
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US2341520A
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US2299499A
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US2343262A
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US2294191A
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US2379115A
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US2333215A
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US2344774A
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US2408093A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-27 | 1952-01-26 | 1952-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-27 | 1956-01-26 | 1956-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-27 | 1960-01-26 | 1960-07-27 | $7700.00 | Window Closed / Lapsed |