Patent US3303338A successfully refreshed from Google Patents.
US3303338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light diffuser system
Assignee: INTEGRATED CEILINGS Inc
•
Filing: 1964-10-20
•
Granted: 1967-02-07
•
Expires: 1984-10-20
Abstract
No abstract record available.
Inventors
- 👤 William A Lyon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:26
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/02; F21S2/00; F21V; F21V21/00; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
IN A LIGHT DIFFUSER SYSTEM: A HORIZONTAL SUPPORTING FRAME ADAPTED TO BE CARRIED BY AND DISPOSED BELOW A CEILING STRUCTURE ON WHICH A LIGHT SOURCE IS MOUNTED, SAID FRAME ALSO BEING DISPOSED BELOW THE LIGHT SOURCE, 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 SOLELY AT THE UPPER END OF SAID VERTICAL FLANGE; LIGHT DIFFUSING DEVICES FOR SAID OPENINGS, EACH DEVICE INCLUDING A DIFFUSER; AND MEANS MOUNTING SAID DEVICES ON SAID MEMBERS WITH SAID DIFFUSERS LYING IN A HORIZONTAL PLANE SUBSTANTIALLY ABOVE THE LOWER HALF OF SAID VERTICAL FLANGES AND ADJACENT TO THE HORIZONTAL PLANE OF SAID HORIZONTAL FLANGES, SAID FRAME BEING OF SUCH SHAPE AND FORM THAT SUBSTANTIALLY NO SHADOW OF THE HORIZONTAL SUPPORTING FRAME IS CAST ON THE DIFFUSER MEMBERS BY THE LIGHT SOURCE.
Claim 2
Dependent Claim
144 words
IN A LIGHT DIFFUSER SYSTEM: A HORIZONTAL SUPPORTING FRAME ADAPTED TO BE CARRIED BY AND DISPOSED BELOW A CEILING STRUCTURE ON WHICH A LIGHT SOURCE IS MOUNTED, SAID FRAME ALSO BEING DISPOSED BELOW THE LIGHT SOURCE, 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 SOLELY AT THE UPPER END OF SAID VERTICAL FLANGE; LIGHT DIFFUSING DEVICES FOR SAID OPENINGS, EACH DEVICE INCLUDING A DIFFUSER; AND MEANS MOUNTING SAID DEVICES ON SAID MEMBERS WITH SAID DIFFUSERS LYING IN A HORIZONTAL PLANE SUBSTANTIALLY ABOVE THE LOWER HALF OF SAID VERTICAL FLANGES AND ADJACENT TO THE HORIZONTAL PLANE OF SAID HORIZONTAL FLANGES, SAID FRAME BEING OF SUCH SHAPE AND FORM THAT SUBSTANTIALLY NO SHADOW OF THE HORIZONTAL SUPPORTING FRAME IS CAST ON THE DIFFUSER MEMBERS BY THE LIGHT SOURCE.
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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |