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.)
Publication of NL56115CpublicationCriticalpatent/NL56115C/xx
H03G1/00—Details of arrangements for controlling amplification
H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
H03G1/0011—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying tube elements
A—HUMAN NECESSITIES
A45—HAND OR TRAVELLING ARTICLES
A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
A45F3/04—Sacks or packs carried on the body by means of two straps passing over the two shoulders
A45F3/08—Carrying-frames; Frames combined with sacks