JPS542773A - Electronic wristwatch - Google Patents

Electronic wristwatch

Info

Publication number
JPS542773A
JPS542773A JP6743577A JP6743577A JPS542773A JP S542773 A JPS542773 A JP S542773A JP 6743577 A JP6743577 A JP 6743577A JP 6743577 A JP6743577 A JP 6743577A JP S542773 A JPS542773 A JP S542773A
Authority
JP
Japan
Prior art keywords
electronic wristwatch
gold
bearings
improvement
quality
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.)
Granted
Application number
JP6743577A
Other languages
Japanese (ja)
Other versions
JPS5828344B2 (en
Inventor
Toshiharu Suzuki
Ichikazu Kasai
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP6743577A priority Critical patent/JPS5828344B2/en
Publication of JPS542773A publication Critical patent/JPS542773A/en
Publication of JPS5828344B2 publication Critical patent/JPS5828344B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Chemically Coating (AREA)
  • Electromechanical Clocks (AREA)

Abstract

PURPOSE: To achieve the improvement in quality and longer life by mounting shafts or bearings of gold or gold alloy whose Vickers hardness is of a specific value and which has [111] face preferentially on the surface to bearing parts.
COPYRIGHT: (C)1979,JPO&Japio
JP6743577A 1977-06-08 1977-06-08 electronic watch Expired JPS5828344B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6743577A JPS5828344B2 (en) 1977-06-08 1977-06-08 electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6743577A JPS5828344B2 (en) 1977-06-08 1977-06-08 electronic watch

Publications (2)

Publication Number Publication Date
JPS542773A true JPS542773A (en) 1979-01-10
JPS5828344B2 JPS5828344B2 (en) 1983-06-15

Family

ID=13344829

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6743577A Expired JPS5828344B2 (en) 1977-06-08 1977-06-08 electronic watch

Country Status (1)

Country Link
JP (1) JPS5828344B2 (en)

Also Published As

Publication number Publication date
JPS5828344B2 (en) 1983-06-15

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