Patent US2464971A successfully refreshed from Google Patents.
US2464971A
Expired / Lapsed
US
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Luminaire and transformer housing
Assignee: Westinghouse Electric Corp
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Filing: 1946-04-26
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Granted: 1949-03-22
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Expires: 1966-04-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles W Flood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:23
CPC Classifications
F; F21; F21V; F21V25/00; F21V25/02; F21V25/04; F21V23/00; F21V23/02; F21Y; F21Y2103/00
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) | 1952-03-21 | 1952-09-20 | 1953-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-21 | 1956-09-20 | 1957-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-21 | 1960-09-20 | 1961-03-22 | $7700.00 | Window Closed / Lapsed |