Patent US4930600A successfully refreshed from Google Patents.
Patent US3272978A successfully refreshed from Google Patents.
US3272978A
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Lighting fixture
Assignee: GTE Sylvania Inc
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Filing: 1963-12-24
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Granted: 1966-09-13
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Expires: 1983-12-24
Abstract
No abstract record available.
Inventors
- 👤 Donald L Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:24
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/04; F21S8/06; F21V; F21V21/00; F21V21/02; F21V21/10; F21V21/112; F21V23/00; F21V23/02; F21V23/026; F21Y; F21Y2103/00; Y; Y10; Y10S; Y10S174/00; Y10S174/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A LIGHTING FIXTURE ASSEMBLY COMPRISING: A REFLECTOR; AN OPEN-ENDED TROUGH MOUNTED ON THE TOP OF SAID REFLECTOR, THE UPPER LONGITUDINAL EDGES OF SAID TROUGH DEFINING CHANNELS; A BALLAST MOUNTED IN SAID TROUGH, SAID BALLAST HAVING WIRING CONNECTED THERETO AND EXTENDING THEREFROM; AND AN OPEN-ENDED CANOPY, THE LOWER LONGITUDINAL EDGES OF WHICH DEFINE CHANNELS, SAID FIRST MENTIONED CHANNELS
Claim 2
Dependent Claim
57 words
A LIGHTING FIXTURE ASSEMBLY COMPRISING: A REFLECTOR; AN OPEN-ENDED TROUGH MOUNTED ON THE TOP OF SAID REFLECTOR, THE UPPER LONGITUDINAL EDGES OF SAID TROUGH DEFINING CHANNELS; A BALLAST MOUNTED IN SAID TROUGH, SAID BALLAST HAVING WIRING CONNECTED THERETO AND EXTENDING THEREFROM; AND AN OPEN-ENDED CANOPY, THE LOWER LONGITUDINAL EDGES OF WHICH DEFINE CHANNELS, SAID FIRST MENTIONED CHANNELS
References Cited (Backward Citations)
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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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |