CA971804A - Etch-back screening - Google Patents

Etch-back screening

Info

Publication number
CA971804A
CA971804A CA135,058A CA135058A CA971804A CA 971804 A CA971804 A CA 971804A CA 135058 A CA135058 A CA 135058A CA 971804 A CA971804 A CA 971804A
Authority
CA
Canada
Prior art keywords
etch
back screening
screening
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
CA135,058A
Other versions
CA135058S (en
Inventor
Jaroslaw A. Holowka
Martin L. Lerner
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.)
Zenith Electronics LLC
Original Assignee
Zenith Radio 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 Zenith Radio Corp filed Critical Zenith Radio Corp
Application granted granted Critical
Publication of CA971804A publication Critical patent/CA971804A/en
Expired legal-status Critical Current

Links

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
    • H01J9/14—Manufacture of electrodes or electrode systems of non-emitting electrodes
    • H01J9/142—Manufacture of electrodes or electrode systems of non-emitting electrodes of shadow-masks for colour television tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • ing And Chemical Polishing (AREA)
CA135,058A 1971-04-01 1972-02-18 Etch-back screening Expired CA971804A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13012171A 1971-04-01 1971-04-01

Publications (1)

Publication Number Publication Date
CA971804A true CA971804A (en) 1975-07-29

Family

ID=22443147

Family Applications (1)

Application Number Title Priority Date Filing Date
CA135,058A Expired CA971804A (en) 1971-04-01 1972-02-18 Etch-back screening

Country Status (2)

Country Link
US (1) US3772103A (en)
CA (1) CA971804A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3891491A (en) * 1972-04-14 1975-06-24 Zenith Radio Corp Apparatus for re-etching a color cathode ray tube shadow mask
CA1204143A (en) * 1982-08-27 1986-05-06 Kanemitsu Sato Textured shadow mask
US6086773A (en) * 1998-05-22 2000-07-11 Bmc Industries, Inc. Method and apparatus for etching-manufacture of cylindrical elements

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB795908A (en) * 1955-06-24 1958-06-04 Zenith Radio Corp Improvements in or relating to methods of manufacturing colour cathode ray tubes
US3502519A (en) * 1966-12-08 1970-03-24 Eastman Kodak Co Process for thru-hole etching of a metal plastic

Also Published As

Publication number Publication date
US3772103A (en) 1973-11-13

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