Improvements in electrically operated clocks
申请公布号:GB352582(A)
申请号:GB19300012588
申请日期:1930.04.23
申请公布日期:1931.07.16
分类号:G04C13/04
主分类号:G04C13/04
CONTROLLING SYSTEM OF AIR CONDITIONING OF SPECIAL WORKING ROOM
ARRAYING METHOD OF BUNDLE FIBER
HORIZONTAL TYPE MULTISTAGE PRESS
AUTOMATIC POWER FEEDING STOP DEVICE OF TELEVISION RECEIVER
FLOPPY DISK DEVICE FOR NUMERICAL CONTROL
PHOTOSENSOR FOR CONVERTING LIGHT TO SOUND SYNTHESIZATION PATTERN
DRIVE AND BEARING FOR A ROTOR OF AN OPEN-END SPINNING UNIT
ENTSTOERUNGSANORDNUNG FUER EINEN REIHENSCHLUSSMOTOR
INSERTION PRINTING DEVICE FOR LIST DATA
APPARATUS FOR DETECTING AND OBTAINING INFORMATION ON CHANGESIN VARIABLE STATE