NL28979C - - Google Patents

Info

Publication number: NL28979C
Authority: NL; Netherlands

Application number

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.)

1929-12-23

Publication of NL28979C publication Critical patent/NL28979C/xx

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
- H01J9/042—Manufacture, activation of the emissive part

Landscapes

Engineering & Computer Science (AREA)
Manufacturing & Machinery (AREA)
Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Solid Thermionic Cathode (AREA)

NL28979D 1929-12-23 NL28979C (ja�@�@)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
HU341826X		1929-12-23

Publications (1)

Publication Number	Publication Date
NL28979C true NL28979C (ja�@�@)

Family

ID=10978844

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL28979D NL28979C (ja�@�@)	1929-12-23

Country Status (5)

Country	Link
BE (1)	BE370532A (ja�@�@)
DE (1)	DE539890C (ja�@�@)
FR (1)	FR696589A (ja�@�@)
GB (1)	GB341826A (ja�@�@)
NL (1)	NL28979C (ja�@�@)

0
- NL NL28979D patent/NL28979C/xx active
- BE BE370532D patent/BE370532A/xx unknown
1930
- 1930-05-14 DE DE1930539890D patent/DE539890C/de not_active Expired
- 1930-05-16 GB GB15108/30A patent/GB341826A/en not_active Expired
- 1930-06-03 FR FR696589D patent/FR696589A/fr not_active Expired

Also Published As

Publication number	Publication date
DE539890C (de)	1931-12-03
GB341826A (en)	1931-01-22
FR696589A (fr)	1931-01-05
BE370532A (ja�@�@)

Similar Documents

Publication	Publication Date	Title
BE357721A (ja�@�@)	1929-02-28
AT126897B (ja�@�@)	1932-02-25
BE356773A (ja�@�@)
BE343605A (ja�@�@)
BE302977A (ja�@�@)
BE308711A (ja�@�@)
BE328560A (ja�@�@)
BE331572A (ja�@�@)
BE332768A (ja�@�@)
BE335686A (ja�@�@)
BE337359A (ja�@�@)
BE357075A (ja�@�@)
BE356979A (ja�@�@)
BE343892A (ja�@�@)
BE344502A (ja�@�@)
BE344529A (ja�@�@)
BE346078A (ja�@�@)
BE349166A (ja�@�@)
BE351245A (ja�@�@)
BE351620A (ja�@�@)
BE352511A (ja�@�@)
BE354157A (ja�@�@)
BE354333A (ja�@�@)
BE288327A (ja�@�@)
BE370532A (ja�@�@)