B12B341B1B4312 IBDHMAYMLSYGAK-UHFFFAOYSA-N 0.000 description 4 IBDHMAYMLSYGAK-UHFFFAOYSA-N Lanthanum boride Chemical compound.238000010894 electron beam technology Methods 0.000 title description 34. Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Assignors: HOOKER CHEMICALS & PLASTICS CORP. 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 General Electric Co filed Critical General Electric Co Priority to US429325A priority Critical patent/US3356843A/en Priority to FR47990A priority patent/FR1466802A/en Application granted granted Critical Publication of US3356843A publication Critical patent/US3356843A/en Assigned to OCCIDENTAL CHEMICAL CORPORATION reassignment OCCIDENTAL CHEMICAL CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Original Assignee General Electric Co 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 or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US429325A Inventor Peter E Mcelligott Current Assignee (The listed assignees may be inaccurate. Google Patents Mass spectrometer electron beam ion source having means for focusing the electron beamÄownload PDF Info Publication number US3356843A US3356843A US429325A US42932565A US3356843A US 3356843 A US3356843 A US 3356843A US 429325 A US429325 A US 429325A US 42932565 A US42932565 A US 42932565A US 3356843 A US3356843 A US 3356843A Authority US United States Prior art keywords electron beam filament cage mass spectrometer current Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US3356843A - Mass spectrometer electron beam ion source having means for focusing the electron beam US3356843A - Mass spectrometer electron beam ion source having means for focusing the electron beam
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