US2451043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas discharge lamp
Assignee: Individual
•
Filing: 1944-12-23
•
Granted: 1948-10-12
•
Expires: 1964-12-23
Abstract
No abstract record available.
Inventors
- 👤 Pennybacker Miles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:23
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/54; H01J61/545
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2009215A
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US1930149A
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US1951138A
Cited
US2225712A
Cited
US2056613A
Cited
US2094647A
Cited
US2177691A
Cited
US2118981A
Cited
US2177705A
Cited
US2177735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-12 | 1952-04-12 | 1952-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-12 | 1956-04-12 | 1956-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-12 | 1960-04-12 | 1960-10-12 | $7700.00 | Window Closed / Lapsed |