US3274383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminaire
Assignee: Corning Glass Works
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Filing: 1964-06-01
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Granted: 1966-09-20
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Expires: 1984-06-01
Abstract
No abstract record available.
Inventors
- 👤 William H Dorman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:36
CPC Classifications
F; F21; F21V; F21V5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A REFRACTOR OF A GENERALLY SEMI-OVATE FORM HAVING A GENERALLY FLAT RIM FORMING ITS PERIPHERY, SAID REFRACTOR BEING SYMMETRIC ABOUT A LONGITUDINAL PLANE PERPENDICULAR TO THE PLANE OF SAID RIM, SAID REFRACTOR COMPRISING ON EACH SIDE OF SAID LONGITUDINAL PLANE A SIDE PORTION, SAID SIDE PORTIONS BEING SYMMETRIC ABOUT SAID LONGITUDINAL PLANE, EACH SAID SIDE PORTION COMPRISING AN INNER SURFACE AND AN OUTER SURFACE, ONE OF SAID SURFACES COMPRISING A PLURALITY OF PRISMS HAVING EDGES LYING IN PLANES SUBSTANTIALLY PERPENDICULAR TO SAID LONGITUDINAL PLANE AND HAVING COVEX SURFACES AND THE OTHER SAID SURFACE COMPRISING A PLURALITY OF PRISMS HAVING EDGES IN THE FORM OF ARCS OF CIRCLES WHICH ARE CONCAVE IN THE DIRECTION OF SAID RIM
Claim 2
Dependent Claim
116 words
A REFRACTOR OF A GENERALLY SEMI-OVATE FORM HAVING A GENERALLY FLAT RIM FORMING ITS PERIPHERY, SAID REFRACTOR BEING SYMMETRIC ABOUT A LONGITUDINAL PLANE PERPENDICULAR TO THE PLANE OF SAID RIM, SAID REFRACTOR COMPRISING ON EACH SIDE OF SAID LONGITUDINAL PLANE A SIDE PORTION, SAID SIDE PORTIONS BEING SYMMETRIC ABOUT SAID LONGITUDINAL PLANE, EACH SAID SIDE PORTION COMPRISING AN INNER SURFACE AND AN OUTER SURFACE, ONE OF SAID SURFACES COMPRISING A PLURALITY OF PRISMS HAVING EDGES LYING IN PLANES SUBSTANTIALLY PERPENDICULAR TO SAID LONGITUDINAL PLANE AND HAVING COVEX SURFACES AND THE OTHER SAID SURFACE COMPRISING A PLURALITY OF PRISMS HAVING EDGES IN THE FORM OF ARCS OF CIRCLES WHICH ARE CONCAVE IN THE DIRECTION OF SAID RIM
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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |