Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Elastic Stop Nut Corp
Original Assignee
Elastic Stop Nut Corp
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Publication date
Application filed by Elastic Stop Nut CorpfiledCriticalElastic Stop Nut Corp
Application grantedgrantedCritical
Publication of FR1088331ApublicationCriticalpatent/FR1088331A/fr
G02B3/02—Simple or compound lenses with non-spherical faces
G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Optics & Photonics
(AREA)
FR1088331D1952-08-221953-08-21Lentilles, notamment lentilles catadioptriques; procédés et dispositifs de fabrication de telles lentilles
ExpiredFR1088331A
(fr)