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Inventor

Keikichi Takahashi

Inventor
Tokyo, JP

Overview

4→
Patents
1978–1979
Patent span
Physics
Primary field (CPC G)

Patents· 4 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G04Bprimary
G04BMechanically-driven clocks or watches33%
G04CElectromechanical clocks or watches33%
G10KSound-producing devices17%
Y10TTechnical subjects covered by former us classification17%
PatentTitleYear
4,167,849'Watch with electronic buzzer'19794,114,365'Battery lead plate member for an electronic wrist watch'19784,109,458'Date and day correcting device of a timepiece'19784,102,123'Bearing for a timepiece train'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1979Patents assigned to SEIKO INSTR & ELECTRONICS (4)· patent assignee history
1978–1979Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SEIKO INSTR & ELECTRONICS41978–1979
Locations
LocationPatentsSpan
Tokyo, JP41978–1979