Patent US2574019A successfully refreshed from Google Patents.
US2574019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting fixture for elongated tubular lamps
Assignee: Individual
•
Filing: 1948-11-29
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Granted: 1951-11-06
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Expires: 1968-11-29
Abstract
No abstract record available.
Inventors
- 👤 Jr William P Crockett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:11
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/03; F21S8/031; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2031689A
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US2345234A
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US2250276A
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US2295788A
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US2316404A
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US2376363A
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US2408783A
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US2434781A
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US2445548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-05 | 1955-05-07 | 1955-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-05 | 1959-05-07 | 1959-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-05 | 1963-05-07 | 1963-11-06 | $7700.00 | Window Closed / Lapsed |