Patent US2641433A successfully refreshed from Google Patents.
US2641433A
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US
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Suspension for lighting fixtures
Assignee: CURTIS LIGHTING OF CANADA Ltd
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Filing: 1949-11-15
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Granted: 1953-06-09
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Expires: 1969-11-15
Abstract
No abstract record available.
Inventors
- 👤 Howard L Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:29
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/04; F21S8/06; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US351079A
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US704788A
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US1200877A
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US1625069A
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US1736240A
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US1690941A
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US1849966A
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US1880952A
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US2004695A
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US1946959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |