KR890009353U - 기어를 이용한 교습용 시계 - Google Patents

기어를 이용한 교습용 시계

Info

Publication number
KR890009353U
KR890009353U KR2019870017612U KR870017612U KR890009353U KR 890009353 U KR890009353 U KR 890009353U KR 2019870017612 U KR2019870017612 U KR 2019870017612U KR 870017612 U KR870017612 U KR 870017612U KR 890009353 U KR890009353 U KR 890009353U
Authority
KR
South Korea
Prior art keywords
gear
teaching clock
teaching
clock
Prior art date
Application number
KR2019870017612U
Other languages
English (en)
Other versions
KR900003360Y1 (ko
Inventor
이효진
Original Assignee
비이콘시계공업 주식회사
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 비이콘시계공업 주식회사 filed Critical 비이콘시계공업 주식회사
Priority to KR2019870017612U priority Critical patent/KR900003360Y1/ko
Publication of KR890009353U publication Critical patent/KR890009353U/ko
Application granted granted Critical
Publication of KR900003360Y1 publication Critical patent/KR900003360Y1/ko

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B19/00—Teaching not covered by other main groups of this subclass
    • G09B19/12—Clock-reading
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/20—Indicating by numbered bands, drums, discs, or sheets
    • G04B19/202—Indicating by numbered bands, drums, discs, or sheets by means of turning discs
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/001—Internal gear therefor, e.g. for setting the second hand or for setting several clockworks

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Engineering & Computer Science (AREA)
  • Entrepreneurship & Innovation (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Theoretical Computer Science (AREA)
  • Toys (AREA)
KR2019870017612U 1987-10-16 1987-10-16 기어를 이용한 교습용 시계 KR900003360Y1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019870017612U KR900003360Y1 (ko) 1987-10-16 1987-10-16 기어를 이용한 교습용 시계

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019870017612U KR900003360Y1 (ko) 1987-10-16 1987-10-16 기어를 이용한 교습용 시계

Publications (2)

Publication Number Publication Date
KR890009353U true KR890009353U (ko) 1989-05-30
KR900003360Y1 KR900003360Y1 (ko) 1990-04-20

Family

ID=19268660

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019870017612U KR900003360Y1 (ko) 1987-10-16 1987-10-16 기어를 이용한 교습용 시계

Country Status (1)

Country Link
KR (1) KR900003360Y1 (ko)

Also Published As

Publication number Publication date
KR900003360Y1 (ko) 1990-04-20

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Legal Events

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