Periodic event recorder

Details Periodic event recorder Periodic event recorder

1989-11-15

1990-07-17

Bell, Paul A.

Printed matter

Having revealable concealed information, fraud preventer or...

283900, 116325, 116326, B42D 1500, G09F 900

Patent

active

049416880

ABSTRACT:
A period event recorder comprising a label, indicia on the label corresponding to a desired time or frequency interval; a porous substrate attached to the underside of the label; means for attaching the porous substrate to an object associated with, related to, or nearby the site for performance of a desired task or event; and a stylus adapted to puncture that portion of the label bearing indicia corresponding to that particular performance of the desired task or event.

REFERENCES:
patent: 1790994 (1931-02-01), McCook
patent: 2179168 (1939-11-01), Alexander
patent: 4148273 (1979-04-01), Hollingsworth et al.
patent: 4240649 (1980-12-01), Weber
patent: 4241943 (1980-12-01), Malinovitz
patent: 4282824 (1981-08-01), Lafferty
patent: 4745875 (1988-05-01), Timleck
patent: 4752087 (1988-06-01), Weisbach
patent: 4815767 (1989-03-01), Lambert
patent: 4830407 (1989-05-01), Sadler, Jr. et al.
patent: 4881758 (1989-11-01), Ben-David

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