GB1288795A - - Google Patents

Info

Publication number
GB1288795A
GB1288795A GB1288795DA GB1288795A GB 1288795 A GB1288795 A GB 1288795A GB 1288795D A GB1288795D A GB 1288795DA GB 1288795 A GB1288795 A GB 1288795A
Authority
GB
United Kingdom
Prior art keywords
resistance
resistor
anodization
switches
equal
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
English (en)
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 filed Critical
Publication of GB1288795A publication Critical patent/GB1288795A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/22—Apparatus or processes specially adapted for manufacturing resistors adapted for trimming
    • H01C17/26—Apparatus or processes specially adapted for manufacturing resistors adapted for trimming by converting resistive material
    • H01C17/262—Apparatus or processes specially adapted for manufacturing resistors adapted for trimming by converting resistive material by electrolytic treatment, e.g. anodic oxydation

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
GB1288795D 1968-12-06 1969-12-05 Expired GB1288795A (https=)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78181668A 1968-12-06 1968-12-06

Publications (1)

Publication Number Publication Date
GB1288795A true GB1288795A (https=) 1972-09-13

Family

ID=25124028

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1288795D Expired GB1288795A (https=) 1968-12-06 1969-12-05

Country Status (6)

Country Link
US (1) US3539459A (https=)
BE (1) BE742504A (https=)
DE (1) DE1961537B2 (https=)
FR (1) FR2025568A1 (https=)
GB (1) GB1288795A (https=)
SE (1) SE362311B (https=)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090015355A1 (en) * 2007-07-12 2009-01-15 Endwave Corporation Compensated attenuator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3148129A (en) * 1959-10-12 1964-09-08 Bell Telephone Labor Inc Metal film resistors
US3282821A (en) * 1962-06-13 1966-11-01 Ibm Apparatus for making precision resistors
US3254014A (en) * 1962-06-27 1966-05-31 Western Electric Co Anodizing apparatus
US3341444A (en) * 1964-09-01 1967-09-12 Western Electric Co Anodization control circuits
US3341445A (en) * 1964-09-01 1967-09-12 Western Electric Co Anodization control circuits

Also Published As

Publication number Publication date
BE742504A (https=) 1970-05-14
DE1961537C3 (https=) 1974-09-19
DE1961537B2 (de) 1974-02-14
US3539459A (en) 1970-11-10
FR2025568A1 (https=) 1970-09-11
SE362311B (https=) 1973-12-03
DE1961537A1 (de) 1970-07-09

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees