US2945977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescent glow discharge lamp
Assignee: Osram GmbH
•
Filing: 1958-02-19
•
Granted: 1960-07-19
•
Expires: 1978-02-19
Abstract
No abstract record available.
Inventors
- 👤 Schonherr Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:09
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2298581A
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US2357732A
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US2402019A
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US2564040A
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US2824255A
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US2833949A
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US2885587A
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US2838707A
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US2843805A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |