US3351753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminaire refractor
Assignee: Holophane Corp
•
Filing: 1965-08-27
•
Granted: 1967-11-07
•
Expires: 1985-08-27
Abstract
No abstract record available.
Inventors
- 👤 Berger Emanuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:20
CPC Classifications
F; F21; F21V; F21V13/00; F21V13/02; F21V13/04; F21V11/00; F21V11/08; F21V11/14; F21V5/00; F21V5/02; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A REFRACTOR EXTENDING IN LONGITUDINAL AND TRANSVERSE PLANES FOR USE IN A LUMINAIRE HAVING A LINEAR LIGHT SOURCE, COMPRISING: A LIGHT INCIDENT AND A LIGHT EMERGENT SURFACE, A PLURALITY OF TRUNCATED PRISMS IN LONGITUDINAL AND TRANSVERSE SPACED RELATION WITH REGARD TO EACH OTHER ON THE LIGHT INCIDENT SURFACE, SAID PRISMS HAVING INWARDLY TAPERING SURFACES EXTENDING TOWARD THE LIGHT SOURCE, AND COMPRISING MEANS FOR REFLECTING LIGHT INTERNALLY OF SAID REFRACTOR TOWARD SAID LIGHT EMERGENT SURFACE, SAID PRISMS HAVING TOP SURFACES AT THE TRUNCATED END, AND LIGHT REFLECTIVE MATERIAL COVERING SAID TAPERING SURFACES AND THE AREAS BETWEEN SAID PRISMS, SAID LIGHT REFLECTIVE MATERIAL CONSTITUT-
Claim 2
Dependent Claim
102 words
A REFRACTOR EXTENDING IN LONGITUDINAL AND TRANSVERSE PLANES FOR USE IN A LUMINAIRE HAVING A LINEAR LIGHT SOURCE, COMPRISING: A LIGHT INCIDENT AND A LIGHT EMERGENT SURFACE, A PLURALITY OF TRUNCATED PRISMS IN LONGITUDINAL AND TRANSVERSE SPACED RELATION WITH REGARD TO EACH OTHER ON THE LIGHT INCIDENT SURFACE, SAID PRISMS HAVING INWARDLY TAPERING SURFACES EXTENDING TOWARD THE LIGHT SOURCE, AND COMPRISING MEANS FOR REFLECTING LIGHT INTERNALLY OF SAID REFRACTOR TOWARD SAID LIGHT EMERGENT SURFACE, SAID PRISMS HAVING TOP SURFACES AT THE TRUNCATED END, AND LIGHT REFLECTIVE MATERIAL COVERING SAID TAPERING SURFACES AND THE AREAS BETWEEN SAID PRISMS, SAID LIGHT REFLECTIVE MATERIAL CONSTITUT-
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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |