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.)
Expired
Application number
GB10490/37A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ALMA SCHULLER
Original Assignee
ALMA SCHULLER
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ALMA SCHULLERfiledCriticalALMA SCHULLER
Publication of GB482638ApublicationCriticalpatent/GB482638A/en
H01J61/33—Special shape of cross-section, e.g. for producing cool spot
Landscapes
Glass Compositions
(AREA)
Abstract
482,638. Making glass tubes. SCHULLER, W., and SCHULLER, A., (trading as GLASFABRIK WERNERHUTTE INHABER GEB. SCHULLER). April 13, 1937, No. 10490. Convention date, July 3, 1936. [Class 56] [Also in Groups XL and XXVIII] A tube forming an electric discharge lamp is made with ribs b, c on the inside or outside or both sides of the envelope wall to give varying colour light effect. In addition to those formed integrally some ribs may be attached to the wall; the glass of the ribs may be of different colours.
GB10490/37A1936-07-031937-04-13Luminous tube containing a rare gas for producing coloured light
ExpiredGB482638A
(en)