US2794906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gaseous-discharge apparatus
Assignee: Individual
•
Filing: 1954-06-16
•
Granted: 1957-06-04
•
Expires: 1974-06-16
Abstract
No abstract record available.
Inventors
- 👤 Harold E Edgerton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:40
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/30; H01J61/32; H01J61/322
Claims Analysis
Total Claims: 0
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US2549330A
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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) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |