Patent US2596697A successfully refreshed from Google Patents.
US2596697A
Expired / Lapsed
US
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Electrical discharge lamp
Assignee: Individual
•
Filing: 1948-12-04
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Granted: 1952-05-13
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Expires: 1968-12-04
Abstract
No abstract record available.
Inventors
- 👤 Krefft Hermann Eduard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:06
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/30; H01J61/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2212879A
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US2277876A
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GB527796A
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US2275768A
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US2367871A
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US2263171A
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US2341990A
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US2353668A
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US2392828A
Cited
US2466430A
Cited
US2398970A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-13 | 1955-11-12 | 1956-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-13 | 1959-11-12 | 1960-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-13 | 1963-11-12 | 1964-05-13 | $7700.00 | Window Closed / Lapsed |