Patent US2440832A successfully refreshed from Google Patents.
US2440832A
Expired / Lapsed
US
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Gas discharge lamp
Assignee: Individual
•
Filing: 1945-05-29
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Granted: 1948-05-04
•
Expires: 1965-05-29
Abstract
No abstract record available.
Inventors
- 👤 Pennybacker Miles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:34
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/025; H01J61/04; H01J61/10; H01J61/103
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2262177A
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US1930149A
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US1951138A
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US2030715A
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US2112854A
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US2135732A
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US2118981A
Cited
US2133205A
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US2103227A
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US2364889A
Cited
US2346522A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-04 | 1951-11-03 | 1952-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-04 | 1955-11-03 | 1956-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-04 | 1959-11-03 | 1960-05-04 | $7700.00 | Window Closed / Lapsed |