Patent US4334467A successfully refreshed from Google Patents.
Patent US3202814A successfully refreshed from Google Patents.
US3202814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting device for dispelling shadows
Assignee: Individual
•
Filing: 1962-07-19
•
Granted: 1965-08-24
•
Expires: 1982-07-19
Abstract
No abstract record available.
Inventors
- 👤 Michael J Ceglia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:11
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/04; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
LIGHTING DEVICE OF GENERALLY CYLINDRICAL CONFIGURATION HAVING A CYLINDRICAL BORE THERETHROUGH AND THEREBY ADAPTED TO RECEIVE TUBULAT LIGHT-EMITTING MEANS AXIALLY THEREIN AND HAVING A PROTRUDING CONICAL FACE AT ONE END AND A COAXIAL INTRUDING CONICAL FACE SUBSTANTIALLY PARALLEL THERETO AT THE OTHER END, EACH CONICAL FACE BEING INCLINED AT ESSENTIALLY FORTY-FIVE DEGREES TO THE AXIS AND ADAPTED TO REFLECT AT LEAST SOME OF THE LIGHT INCIDENT ON THE INTERNAL SURFAE THEREOF, WHEREUPON LIGHT TRANSMITTED SUBSTANTIALLY RADIALLY FROM THE AXIS ONTO THE INTERNAL SURFACE OF THE PROTRUDING CONICAL FACE IS REFLECTED SUBSTANTIALLY AXIALLY THEREFROM TO THE INTERNAL SURFACE OF THE INTRUDING CONICAL FACE AND IS REFLECTED SUBSTANTIALLY AXIALLY OUTWARD THEREFROM.
Claim 2
Dependent Claim
109 words
LIGHTING DEVICE OF GENERALLY CYLINDRICAL CONFIGURATION HAVING A CYLINDRICAL BORE THERETHROUGH AND THEREBY ADAPTED TO RECEIVE TUBULAT LIGHT-EMITTING MEANS AXIALLY THEREIN AND HAVING A PROTRUDING CONICAL FACE AT ONE END AND A COAXIAL INTRUDING CONICAL FACE SUBSTANTIALLY PARALLEL THERETO AT THE OTHER END, EACH CONICAL FACE BEING INCLINED AT ESSENTIALLY FORTY-FIVE DEGREES TO THE AXIS AND ADAPTED TO REFLECT AT LEAST SOME OF THE LIGHT INCIDENT ON THE INTERNAL SURFAE THEREOF, WHEREUPON LIGHT TRANSMITTED SUBSTANTIALLY RADIALLY FROM THE AXIS ONTO THE INTERNAL SURFACE OF THE PROTRUDING CONICAL FACE IS REFLECTED SUBSTANTIALLY AXIALLY THEREFROM TO THE INTERNAL SURFACE OF THE INTRUDING CONICAL FACE AND IS REFLECTED SUBSTANTIALLY AXIALLY OUTWARD THEREFROM.
References Cited (Backward Citations)
FR800815A
Cited
US2434951A
Cited
FR1021268A
Cited
DE846734C
Cited
FR1119731A
Cited
GB800553A
Cited
US2881654A
Cited
US2837052A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |