US3336471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceiling light diffuser system
Assignee: INTEGRATED CEILINGS Inc
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Filing: 1965-04-12
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Granted: 1967-08-15
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Expires: 1985-04-12
Abstract
No abstract record available.
Inventors
- 👤 Leonard F Milner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:12
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/32; F; F21; F21S; F21S2/00; F21S8/00; F21S8/02; F21V; F21V17/00; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
IN A LIGHT DIFFUSER SYSTEM: A HORIZONTAL SUPPORTING FRAME ADAPTED TO BE CARRIED BY AND DISPOSED BELOW A CEILING STRUCTURE, SAID FRAME COMPRISING LONGITUDINAL MEMBERS AND CROSS MEMBERS EXTENDING BETWEEN SAID LONGITUDINAL MEMBERS AND DEFINING OPENINGS THEREWITH, EACH MEMBER INCLUDING A VERTICAL FLANGE AND A HORIZONTAL FLANGE AT THE LOWER END OF SAID VERTICAL FLANGE; LIGHT DIFFUSING DEVICES FOR SAID OPENINGS, EACH DEVICE INCLUDING A LIGHT DIFFUSER; AND MEANS SEPARATE FROM SAID MEMBERS SUPPORTING SAID LIGHT DIFFUSER ON SAID MEMBERS WITH SAID DIFFUSERS SPACED FROM AND DISPOSED ABOVE SAID HORIZONTAL FLANGES AND LYING IN A HORIZONTAL PLANE CLOSELY ADJACENT TO THE HORIZONTAL PLANE OF THE UPPER ENDS OF SAID VERTICAL FLANGES.
Claim 2
Dependent Claim
111 words
IN A LIGHT DIFFUSER SYSTEM: A HORIZONTAL SUPPORTING FRAME ADAPTED TO BE CARRIED BY AND DISPOSED BELOW A CEILING STRUCTURE, SAID FRAME COMPRISING LONGITUDINAL MEMBERS AND CROSS MEMBERS EXTENDING BETWEEN SAID LONGITUDINAL MEMBERS AND DEFINING OPENINGS THEREWITH, EACH MEMBER INCLUDING A VERTICAL FLANGE AND A HORIZONTAL FLANGE AT THE LOWER END OF SAID VERTICAL FLANGE; LIGHT DIFFUSING DEVICES FOR SAID OPENINGS, EACH DEVICE INCLUDING A LIGHT DIFFUSER; AND MEANS SEPARATE FROM SAID MEMBERS SUPPORTING SAID LIGHT DIFFUSER ON SAID MEMBERS WITH SAID DIFFUSERS SPACED FROM AND DISPOSED ABOVE SAID HORIZONTAL FLANGES AND LYING IN A HORIZONTAL PLANE CLOSELY ADJACENT TO THE HORIZONTAL PLANE OF THE UPPER ENDS OF SAID VERTICAL FLANGES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |