Patent US3305681A successfully refreshed from Google Patents.
US3305681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting fixture with adjustable beam director
Assignee: Prescolite Manufacturing Corp
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Filing: 1964-10-02
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Granted: 1967-02-21
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Expires: 1984-10-02
Abstract
No abstract record available.
Inventors
- 👤 Green Frederic Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:08
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/14; F21V21/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A LIGHTING FIXTURE COMPRISING A CIRCULAR SUPPORT RING, AND A LIGHT BEAM DIRECTOR HOUSING INCLUDING A PORTION HAVING AN ELLIPTICAL CROSS SECTION DISPOSED WITHIN SAID RING IN ROTATIONAL SLIDING RELATION THERETO WITH SAID RING BEING INCLINED WITH RESPECT TO THE LONGITUDINAL AXIS OF SAID HOUSING PORTION AND THE ENTIRE INNER CIRCUMFERENCE OF THE RING CONTACTING THE PERIPHERY OF SAID HOUSING PORTION.
Claim 2
Dependent Claim
61 words
A LIGHTING FIXTURE COMPRISING A CIRCULAR SUPPORT RING, AND A LIGHT BEAM DIRECTOR HOUSING INCLUDING A PORTION HAVING AN ELLIPTICAL CROSS SECTION DISPOSED WITHIN SAID RING IN ROTATIONAL SLIDING RELATION THERETO WITH SAID RING BEING INCLINED WITH RESPECT TO THE LONGITUDINAL AXIS OF SAID HOUSING PORTION AND THE ENTIRE INNER CIRCUMFERENCE OF THE RING CONTACTING THE PERIPHERY OF SAID HOUSING PORTION.
References Cited (Backward Citations)
US2649535A
Cited
US2989619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |