Improvements in or relating to grid-controlled discharge devices, particularly designed for use in radio-frequency heating having different cathode values for these tubes.

Keywords	Philips Gloeilampenfabrieken Cantwell Co. February Patent Magnet
Ministry/ Department/ Residency	PATENTS AND DISGNS KOLKATA
Branch	Kolkata
From Year / Date (YYYY-MM-DD)	1953
To Year / Date (YYYY-MM-DD)	1953
Source Organization	NA
Identifier	NAIBHF00008235
File No./Reference No./Sheet No./Folio No.	86494
Location	BBSR-R1
Part No.	NA
File Size	39.7 MB
Pages	24
Call Number	NA
Publisher	NA
Subject	NA
Creator	NA
Accession Number	NA
Series	NA
Year of Publication	NA
Language	English
Bundle Barcode	NAIBHB00000313
Location Code	NA
File Barcode	NAIBHF00008235
QC Certificate No.	QC_20240726BH
Bundle No.	121