Improvements in or relating to circuit arrangements for determining the free state or the busy state of the links of switching network

Keywords	Philips Gloeilampenfabrieken Cantwell Co. N. V. Philips' India
Ministry/ Department/ Residency	PATENTS AND DESIGNS KOLKATA
Branch	Kolkata
From Year / Date (YYYY-MM-DD)	16 Oct 1952
To Year / Date (YYYY-MM-DD)	16 Oct 1952
Source Organization	NA
Identifier	NAIBHF00006619
File No./Reference No./Sheet No./Folio No.	84630
Location	BBSR-R1
Part No.	NA
File Size	89.9 MB
Pages	54
Call Number	NA
Publisher	NA
Subject	NA
Creator	NA
Accession Number	NA
Series	NA
Year of Publication	NA
Language	English
Bundle Barcode	NAIBHB00000280
Location Code	NA
File Barcode	NAIBHF00006619
QC Certificate No.	QC_20240701BH
Bundle No.	88