Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
  • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
  • H01J5/32—Seals for leading-in conductors
  • H01J5/44—Annular seals disposed between the ends of the vessel
• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
  • G07C1/00—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people
  • G07C1/22—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people in connection with sports or games
  • G07C1/26—Pigeon-timing or like equipment

Landscapes

• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
• Electric Vacuum Cleaner (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=6506962

Family Applications (1)

Country Status (3)

• 0
  • BE BE410551D patent/BE410551A/xx unknown
• 1935
  • 1935-05-21 GB GB14827/35A patent/GB436848A/en not_active Expired
  • 1935-07-26 FR FR792965D patent/FR792965A/fr not_active Expired

Also Published As

Similar Documents