KR940025127U - 다중나선관 - Google Patents

다중나선관

Info

Publication number
KR940025127U
KR940025127U KR2019930006867U KR930006867U KR940025127U KR 940025127 U KR940025127 U KR 940025127U KR 2019930006867 U KR2019930006867 U KR 2019930006867U KR 930006867 U KR930006867 U KR 930006867U KR 940025127 U KR940025127 U KR 940025127U
Authority
KR
South Korea
Prior art keywords
multiple helix
helix
Prior art date
Application number
KR2019930006867U
Other languages
English (en)
Other versions
KR960001360Y1 (ko
Inventor
서봉석
Original Assignee
서봉석
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 서봉석 filed Critical 서봉석
Priority to KR2019930006867U priority Critical patent/KR960001360Y1/ko
Publication of KR940025127U publication Critical patent/KR940025127U/ko
Application granted granted Critical
Publication of KR960001360Y1 publication Critical patent/KR960001360Y1/ko

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/16—Rigid pipes wound from sheets or strips, with or without reinforcement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
KR2019930006867U 1993-04-28 1993-04-28 다중나선관 KR960001360Y1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019930006867U KR960001360Y1 (ko) 1993-04-28 1993-04-28 다중나선관

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019930006867U KR960001360Y1 (ko) 1993-04-28 1993-04-28 다중나선관

Publications (2)

Publication Number Publication Date
KR940025127U true KR940025127U (ko) 1994-11-17
KR960001360Y1 KR960001360Y1 (ko) 1996-02-13

Family

ID=19354364

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019930006867U KR960001360Y1 (ko) 1993-04-28 1993-04-28 다중나선관

Country Status (1)

Country Link
KR (1) KR960001360Y1 (ko)

Also Published As

Publication number Publication date
KR960001360Y1 (ko) 1996-02-13

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Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
REGI Registration of establishment
LAPS Lapse due to unpaid annual fee