Combined electronic calculator and abacus with deflective guide

Details Combined electronic calculator and abacus with deflective guide Combined electronic calculator and abacus with deflective guide

1989-05-23

1992-07-28

Lee, Thomas C.

Boots, shoes, and leggings

364234, 3642344, 3642375, 3642379, 3642312, 3642311, 36423131, 3642262, 364DIG2, 36470913, G06F 302, G06F 3147, G06F 1502, G06F 1516

Patent

active

051346923

ABSTRACT:
An electronic calculator is provided with an abacus and has both advantages of the calculator and abacus. An abacus and a portable electronic calculator are integrally constituted in such a manner as superimposing each other. Thus, the calculator according to the present invention can be used as a abacus by shifting a counter of an abacus along a guide bar thereof and it can also be used as a conventional electronic calculator by pushing the counter downward.

REFERENCES:
patent: 3092917 (1963-06-01), Podell
patent: 3688418 (1972-09-01), Wilson
patent: 3731401 (1973-05-01), Kojima
patent: 3963906 (1976-06-01), Yamamura et al.
patent: 4217656 (1980-08-01), Hirano et al.
patent: 4812124 (1984-03-01), Colodner et al.

Affiliated with

Also associated with

Rating

Combined electronic calculator and abacus with deflective guide does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Combined electronic calculator and abacus with deflective guide , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Combined electronic calculator and abacus with deflective guide will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1692530