has become blurred as a result of the growth of the internet and its increasing role in the transfer of telecoms data. [ ] [ ] contents types semiconductors vendors see also references types[ edit ] telecommunications equipment can be broadly broken down into the following categories: [ ] public switching...
field effect transistors . bipolar transistors are still usedfor amplification of signals, switching, and in digital circuits. specialized types are usedfor high voltage switches, for radio-frequency amplifiers, or forswitching heavy currents. contents current direction conventions function voltage...
and scientific apparatus promoteiq - trademark details promoteiq - trademark detailsstatus: - new application - record initialized not assigned to examiner serial number word mark promoteiq status - new application - record initialized not assigned to examiner status date - - filing date - - mark drawing...
] sutton's vacuum pump design which overcame deficiencies in the sprengel pump , was usedfor the production of light globes by the edison swan company . [ ] : – [ ] : – [ ] telephony[ edit ] after reading of bell 's announcement of the invention of the telephone, sutton had designed about twenty different...
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(class / ) for dvd or cd (class / ) for portable video device (class / ) e subclasses processing of color television signals in connection with recording (epo) (class /e . ) for controlling the level of the chrominance signal (e.g., by means of automatic chroma control circuits, etc.)...
for testing lab for cement testing lab ncmt-e blaine air permeability apparatusfor cement testing - the apparatus is usedfor determining the fineness of cement in terms of specific surface expressed as total surface area in square centimeters per gram of cement. this is a variable flow type are permeability...
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