Patent US2665784A successfully refreshed from Google Patents.
US2665784A
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Lighting louver
Assignee: Lighting Products Inc
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Filing: 1949-04-20
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Granted: 1954-01-12
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Expires: 1969-04-20
Abstract
No abstract record available.
Inventors
- 👤 Kenneth B Lacy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:06
CPC Classifications
F; F21; F21V; F21V11/00; F21V11/06; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US200103A
Cited
US794627A
Cited
US1008395A
Cited
US1616243A
Cited
US1965143A
Cited
US2007716A
Cited
US2396735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |