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
GB920440A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NVfiledCriticalPhilips Gloeilampenfabrieken NV
Priority to GB920440ApriorityCriticalpatent/GB546048A/en
Publication of GB546048ApublicationCriticalpatent/GB546048A/en
H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
H01J7/14—Means for obtaining or maintaining the desired pressure within the vessel
H01J7/18—Means for absorbing or adsorbing gas, e.g. by gettering
H01J7/183—Composition or manufacture of getters
Landscapes
Engineering & Computer Science
(AREA)
Manufacturing & Machinery
(AREA)
Measuring Fluid Pressure
(AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Valves And Accessory Devices For Braking Systems
(AREA)
Abstract
546,048. Obtaining high vacuum. MULLARD RADIO VALVE CO., Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). May 24, 1940, No. 9204. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 28, 1940.] [Class 8 (i)] [Also in Group XL] The subject-matter of this Specification is identical with that of 645,150.
GB920440A1940-05-241940-05-24Improved method of introducing barium into a closed space
ExpiredGB546048A
(en)