Patent US2977508A successfully refreshed from Google Patents.
US2977508A
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Gaseous-discharge device and system
Assignee: Revvity Inc
•
Filing: 1956-07-17
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Granted: 1961-03-28
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Expires: 1976-07-17
Abstract
No abstract record available.
Inventors
- 👤 Kenneth J Germeshausen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:46
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/30; H05B41/34; H01; H01J; H01J17/00; H01J17/38; H01J17/40; H01J17/44; H01J17/48; H01J61/00; H01J61/84; H01J61/90; H05B41/32; H01J2893/00; H01J2893/0064; H01J2893/0065; H01J2893/0068; H01J2893/007
Claims Analysis
Total Claims: 0
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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) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |