FR939143A - Improvements in or related to the manufacture of straightening discs - Google Patents

Improvements in or related to the manufacture of straightening discs

Info

Publication number
FR939143A
FR939143A FR939143DA FR939143A FR 939143 A FR939143 A FR 939143A FR 939143D A FR939143D A FR 939143DA FR 939143 A FR939143 A FR 939143A
Authority
FR
France
Prior art keywords
manufacture
straightening discs
straightening
discs
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
Edward Arthur Richards
Leslie James Ellison
Frank Gray
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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.)
Filing date
Publication date
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR939143A publication Critical patent/FR939143A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/06—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising selenium or tellurium in uncombined form other than as impurities in semiconductor bodies of other materials

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
FR939143D 1942-12-03 1946-04-05 Improvements in or related to the manufacture of straightening discs Expired FR939143A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB939143X 1942-12-03

Publications (1)

Publication Number Publication Date
FR939143A true FR939143A (en) 1948-11-04

Family

ID=10748154

Family Applications (1)

Application Number Title Priority Date Filing Date
FR939143D Expired FR939143A (en) 1942-12-03 1946-04-05 Improvements in or related to the manufacture of straightening discs

Country Status (1)

Country Link
FR (1) FR939143A (en)

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