US2448937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Neon light
Assignee: Individual
•
Filing: 1945-07-03
•
Granted: 1948-09-07
•
Expires: 1965-07-03
Abstract
No abstract record available.
Inventors
- 👤 George L Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:52
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/30; H01J61/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1961735A
Cited
US1803439A
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AT120626B
Cited
US2059451A
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US2227739A
Cited
US2274682A
Cited
US2255431A
Cited
US2288250A
Cited
US2273960A
Cited
US2339166A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-07 | 1952-03-08 | 1952-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-07 | 1956-03-08 | 1956-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-07 | 1960-03-08 | 1960-09-07 | $7700.00 | Window Closed / Lapsed |