Metric converter slide rule

Details Metric converter slide rule Metric converter slide rule

1977-12-05

1979-10-09

Zarfas, Louis S.

Printing and office machinery

Typewriter or calculator

Calculator

D1999

Patent

active

D02531151

REFERENCES:
patent: D196069 (1963-08-01), Augustin
patent: 1875927 (1932-09-01), Keuffel

Affiliated with

Also associated with

Rating

Metric converter slide rule does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Metric converter slide rule, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metric converter slide rule will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1960842