US2991386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low-pressure mercury vapor discharge lamp
Assignee: Egyesuelt Izzolampa es Villamossagi Rt
•
Filing: 1959-12-02
•
Granted: 1961-07-04
•
Expires: 1979-12-02
Abstract
No abstract record available.
Inventors
- 👤 Szigeti Gyorgy
- 👤 Lakatos Gyorgy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:54
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/30; H01J61/70; H01J61/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2272992A
Cited
US2279907A
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US2273960A
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US2714681A
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US2748306A
Cited
US2919369A
Cited
US2906905A
Cited
US2930919A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |