US2445679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modulable electric discharge lamp
Assignee: General Electric Co
•
Filing: 1944-08-30
•
Granted: 1948-07-20
•
Expires: 1964-08-30
Abstract
No abstract record available.
Inventors
- 👤 Lemmers Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:22
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/70; H01J17/00; H01J17/38; H01J17/40; H01J17/44; H01J61/02; H01J61/52; H01J2893/00; H01J2893/0064; H01J2893/0065; H01J2893/0068
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1915934A
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US1970223A
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US1923051A
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US1912097A
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US1834251A
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US1999649A
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US1951143A
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US2190308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-20 | 1952-01-19 | 1952-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-20 | 1956-01-19 | 1956-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-20 | 1960-01-19 | 1960-07-20 | $7700.00 | Window Closed / Lapsed |