US3217155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting fixture
Assignee: COLUMBIA ELECTRIC AND Manufacturing CO
•
Filing: 1963-05-10
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Granted: 1965-11-09
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Expires: 1983-05-10
Abstract
No abstract record available.
Inventors
- 👤 Edward M Caferro
- 👤 William S Herdan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:11
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/02; F21V21/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
IN A LIGHTING FIXTURE: A FALSE CEILING STRUCTURE MOUNTED ON SUPPORTING BUILDING MEMBERS AT AN ELEVATION BELOW A TRUE CEILING, SAID FALSE CEILING INCLUDING LIGHT TRANSMITTING PANELS; LAMP MOUNTING MEANS FIXED TO SAID FALSE CEILING STRUCTURE DIRECTLY ABOVE SAID LIGHT TRANSMITTING PANELS; LAMPS MOUNTED ON SAID LAMP MOUNTING MEANS; AND CATWALK MEANS MOVABLY MOUNED ON SAID FALSE CEILING STRUCTURE DIRECTLY ABOVE SAID LAMPS TO PERMIT MANUAL ACCESS TO SAID LAMPS FROM A POSITION ABOVE SAID FALSE CEILING.
Claim 2
Dependent Claim
77 words
IN A LIGHTING FIXTURE: A FALSE CEILING STRUCTURE MOUNTED ON SUPPORTING BUILDING MEMBERS AT AN ELEVATION BELOW A TRUE CEILING, SAID FALSE CEILING INCLUDING LIGHT TRANSMITTING PANELS; LAMP MOUNTING MEANS FIXED TO SAID FALSE CEILING STRUCTURE DIRECTLY ABOVE SAID LIGHT TRANSMITTING PANELS; LAMPS MOUNTED ON SAID LAMP MOUNTING MEANS; AND CATWALK MEANS MOVABLY MOUNED ON SAID FALSE CEILING STRUCTURE DIRECTLY ABOVE SAID LAMPS TO PERMIT MANUAL ACCESS TO SAID LAMPS FROM A POSITION ABOVE SAID FALSE CEILING.
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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |