US3461335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glow-discharge tubes containing a radio-active primer
Assignee: US Philips Corp
•
Filing: 1967-06-26
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Granted: 1969-08-12
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Expires: 1987-06-26
Abstract
No abstract record available.
Inventors
- 👤 Wolfgang Erich Lothaller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:33
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/12; H01J61/16; H01J61/54; H01J61/548
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1481422A
Cited
US2629842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-11 | 1973-02-10 | 1973-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-11 | 1977-02-10 | 1977-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-11 | 1981-02-10 | 1981-08-12 | $7700.00 | Window Closed / Lapsed |