Patent US2975271A successfully refreshed from Google Patents.
US2975271A
Expired / Lapsed
US
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Lighting fixture
Assignee: ART METAL Co
•
Filing: 1958-02-17
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Granted: 1961-03-14
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Expires: 1978-02-17
Abstract
No abstract record available.
Inventors
- 👤 Lester I Dvorak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:21
CPC Classifications
F; F21; F21V; F21V17/00; F21V17/10; F21V17/16; F21Y; F21Y2113/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE232270C
Cited
US2136912A
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US2259307A
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US2338559A
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DE900850C
Cited
US2584671A
Cited
US2727984A
Cited
US2701299A
Cited
US2744191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-13 | 1964-09-12 | 1965-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-13 | 1968-09-12 | 1969-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-13 | 1972-09-12 | 1973-03-14 | $7700.00 | Window Closed / Lapsed |