US3398274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optically round, mechanically ovate reflector with radially stepped sections
Assignee: General Electric Co
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Filing: 1965-07-26
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Granted: 1968-08-20
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Expires: 1985-07-26
Abstract
No abstract record available.
Inventors
- 👤 Charles H Rex
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:36
CPC Classifications
F; F21; F21V; F21V5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A REFLECTOR HAVING A CONCAVE REFLECTING SURFACE WITH AN EDGE DEFINING AN OPENING FOR THE EMISSION OF LIGHT FROM SAID REFLECTOR, SAID REFLECTING SURFACE COMPRISING A PLURALITY OF SURFACES OF REVOLUTION ABOUT A COMMON DIRECTRIX PASSING THROUGH SAID OPENING, SAID SURFACES OF REVOLUTION INTERSECTING AT LEAST ONE PLANE PERPENDICULAR TO SAID DIRECTRIX SO AS TO FORM A PLURALITY OF ARCS OF CIRCLES HAVING DIFFERING RADII AND HAVING A COMMON CENTER AT THE INTERSECTION OF SAID DIRECTRIX WITH SAID PLANE PERPENDICULAR THERETO, SAID ARCS FORMING TOGETHER A GENERALLY NON-CIRCULAR CONFIGURATION.
Claim 2
Dependent Claim
89 words
A REFLECTOR HAVING A CONCAVE REFLECTING SURFACE WITH AN EDGE DEFINING AN OPENING FOR THE EMISSION OF LIGHT FROM SAID REFLECTOR, SAID REFLECTING SURFACE COMPRISING A PLURALITY OF SURFACES OF REVOLUTION ABOUT A COMMON DIRECTRIX PASSING THROUGH SAID OPENING, SAID SURFACES OF REVOLUTION INTERSECTING AT LEAST ONE PLANE PERPENDICULAR TO SAID DIRECTRIX SO AS TO FORM A PLURALITY OF ARCS OF CIRCLES HAVING DIFFERING RADII AND HAVING A COMMON CENTER AT THE INTERSECTION OF SAID DIRECTRIX WITH SAID PLANE PERPENDICULAR THERETO, SAID ARCS FORMING TOGETHER A GENERALLY NON-CIRCULAR CONFIGURATION.
References Cited (Backward Citations)
US3112893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |