Patent US2744191A successfully refreshed from Google Patents.
US2744191A
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US
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Downlight and hinge assembly therefor
Assignee: PITTSBURGH REFLECTOR Co
•
Filing: 1953-05-11
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Granted: 1956-05-01
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Expires: 1973-05-11
Abstract
No abstract record available.
Inventors
- 👤 Robert J Renaud
- 👤 Mack William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:04
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/02; F21V; F21V17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US534012A
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US1478473A
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US1424431A
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US1483367A
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US1716038A
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US2327552A
Cited
US2434108A
Cited
US2639368A
Cited
US2684498A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |