Patent US2643328A successfully refreshed from Google Patents.
US2643328A
Expired / Lapsed
US
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Electric light fixture shade and chassis construction
Assignee: Safety Car Heating and Lighting Co
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Filing: 1950-05-18
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Granted: 1953-06-23
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Expires: 1970-05-18
Abstract
No abstract record available.
Inventors
- 👤 Arthur R Elmendorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:25
CPC Classifications
F; F21; F21V; F21V17/00; B; B60; B60Q; B60Q1/00; B60Q1/26; F21V17/10; F21V17/16; F21V3/00; F21V3/02; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1746339A
Cited
US1955935A
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US2090239A
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US2229145A
Cited
US2225217A
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US2269182A
Cited
US2319732A
Cited
US2465141A
Cited
US2440603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |