Patent US3390296A successfully refreshed from Google Patents.
US3390296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric discharge device having spaced electrodes sealed to opposite end of envelope
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1966-03-14
•
Granted: 1968-06-25
•
Expires: 1986-03-14
Abstract
No abstract record available.
Inventors
- 👤 Smith J Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:45
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/36; H01J61/361; H01J61/363; H01J5/00; H01J5/20; H01J5/32; H01J5/40; H01J61/04; H01J61/06; H01J61/067; H01J61/0672; H01J61/0675; H01J61/073; H01J61/0732; H01J61/0735; H01J61/366; H01J2893/00; H01J2893/0033; H01J2893/0034; H01J2893/0035; H01J2893/0037
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |