Place marker

Details Place marker Place marker

1986-08-14

1987-08-25

Stearns, Richard R.

Signals and indicators

Indicators

Page type

33 2H, 33485, B42D 900, A44B 2100

Patent

active

046885102

ABSTRACT:
A marker device that clips onto a page, for example, has a spring between proximal ends of a pair of similar congruent leaves so as to spread the proximal ends away from each other and press corresponding opposite distal ends toward each other. One leaf has graduations on it constituting part of a scale or ruler. A third flat straight leaf is connected to one of the pair of spring-biased leaves in such manner that the third leaf can slide and extend or contract relative to the one leaf. The third leaf has graduations that form a continuous measuring scale in conjunction with the graduations on the one leaf when the third leaf is fully extended.

REFERENCES:
patent: 194305 (1877-08-01), Marshall
patent: 283576 (1883-08-01), Crabtree
patent: 1355025 (1920-10-01), Alpert et al.
patent: 1979789 (1934-11-01), Barrett
patent: 2388736 (1945-11-01), Germain
patent: 2592362 (1952-04-01), Weeks
patent: 2699748 (1955-01-01), Crawford
patent: 3656213 (1972-04-01), McNeely

Affiliated with

Also associated with

Rating

Place marker does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1917265