US2791679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discharge lamp
Assignee: Westinghouse Electric Corp
•
Filing: 1953-07-17
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Granted: 1957-05-07
•
Expires: 1973-07-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank J Hierholzer
- 👤 John A Storms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:53
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/50; H01J5/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-06 | 1960-11-05 | 1961-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-06 | 1964-11-05 | 1965-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-06 | 1968-11-05 | 1969-05-07 | $7700.00 | Window Closed / Lapsed |