US3146956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspended ceiling and lighting system
Assignee: Individual
•
Filing: 1960-05-25
•
Granted: 1964-09-01
•
Expires: 1980-05-25
Abstract
No abstract record available.
Inventors
- 👤 Robert A D Schwartz
- 👤 Stephen W Lindheim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:03
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/32; F; F21; F21V; F21V21/00; F21V21/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A LUMINOUS CEILING COMPRISING A FRAMEWORK FORMED BY SPACED, PARALLEL LONGITUDINAL MEMBERS AND CROSS MEMBERS EXTENDING BETWEEN AND ATTACHED TO SAID LONGITUDINAL MEMBERS TO FORM A SUBSTANTIALLY PLANAR, GRID-LIKE STRUCTURE, SAID LONGITUDINAL AND CROSS MEMBERS BEING PROVIDED WITH PANEL SUPPORT MEANS TO SUPPORT CEILING PANELS SUBSTANTIALLY IN THE PLANE OF SAID GRID-LIKE STRUCTURE; LIGHT TRANSMITTING CEILING PANELS ENGAGING ON AND BEING SUPPORTED BY SAID PANEL SUPPORT MEANS; MEANS DIRECTLY SUSPENDING SAID FRAME WORK FROM A PERMANENT CEILING; TUBULAR LAMPS DISPOSED INTERMEDIATE SAID PERMANENT CEILING AND SAID CEILING PANELS IN POSITION TO ILLUMINATE SUBSTANTIALLY THE ENTIRE EXPANSE OF SAID CEILING PANELS BY PASSAGE OF LIGHT THROUGH SAID PANELS; MEANS CARRIED BY SAID FRAMEWORK DISPOSED ABOVE THE CEILING PANELS AND PROVIDING THE SOLE SUPPORTING MEANS FOR SAID LAMPS; AND AT LEAST CERTAIN OF SAID FRAME MEMBERS AND SAID LAMP SUPPORTING MEANS FORMING CONDUIT MEANS HAVING WIRING THEREIN ELECTRICALLY CONNECTED TO THE TERMINALS OF SAID TUBULAR LAMPS.
Claim 2
Dependent Claim
154 words
A LUMINOUS CEILING COMPRISING A FRAMEWORK FORMED BY SPACED, PARALLEL LONGITUDINAL MEMBERS AND CROSS MEMBERS EXTENDING BETWEEN AND ATTACHED TO SAID LONGITUDINAL MEMBERS TO FORM A SUBSTANTIALLY PLANAR, GRID-LIKE STRUCTURE, SAID LONGITUDINAL AND CROSS MEMBERS BEING PROVIDED WITH PANEL SUPPORT MEANS TO SUPPORT CEILING PANELS SUBSTANTIALLY IN THE PLANE OF SAID GRID-LIKE STRUCTURE; LIGHT TRANSMITTING CEILING PANELS ENGAGING ON AND BEING SUPPORTED BY SAID PANEL SUPPORT MEANS; MEANS DIRECTLY SUSPENDING SAID FRAME WORK FROM A PERMANENT CEILING; TUBULAR LAMPS DISPOSED INTERMEDIATE SAID PERMANENT CEILING AND SAID CEILING PANELS IN POSITION TO ILLUMINATE SUBSTANTIALLY THE ENTIRE EXPANSE OF SAID CEILING PANELS BY PASSAGE OF LIGHT THROUGH SAID PANELS; MEANS CARRIED BY SAID FRAMEWORK DISPOSED ABOVE THE CEILING PANELS AND PROVIDING THE SOLE SUPPORTING MEANS FOR SAID LAMPS; AND AT LEAST CERTAIN OF SAID FRAME MEMBERS AND SAID LAMP SUPPORTING MEANS FORMING CONDUIT MEANS HAVING WIRING THEREIN ELECTRICALLY CONNECTED TO THE TERMINALS OF SAID TUBULAR LAMPS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |