Toothshaped sand timer

Details Toothshaped sand timer Toothshaped sand timer

1978-02-16

1981-04-07

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Time-measuring instrument or casing

Sandglass

D1003

Patent

active

D02588064

REFERENCES:
patent: D145375 (1946-08-01), Artzt
patent: D232213 (1974-07-01), Dobyns
patent: D232224 (1974-07-01), Dobyns
patent: D238255 (1975-12-01), Beckwith
patent: D247225 (1978-02-01), Beckwith

Affiliated with

Also associated with

Rating

Toothshaped sand timer does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-282235