Patent US2591661A successfully refreshed from Google Patents.
US2591661A
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US
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Reflector for controlling at a predetermined angle direct and reflected rays from a light source
Assignee: Century Lighting Inc
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Filing: 1947-03-07
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Granted: 1952-04-01
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Expires: 1967-03-07
Abstract
No abstract record available.
Inventors
- 👤 Mccandless Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:00
CPC Classifications
F; F21; F21V; F21V11/00; F21V11/02; F21S; F21S8/00; F21S8/02; F21V5/00; F21V5/02; F21V7/00; F21V7/005; F21Y; F21Y2103/00; F21Y2113/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2232499A
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US2223841A
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US2291494A
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US2323073A
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US2337437A
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US2368810A
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US2434049A
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US2526074A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |