Automatic parking coupon

Details Automatic parking coupon Automatic parking coupon

1994-07-20

1996-06-18

Roskoski, Bernard

Horology: time measuring systems or devices

Miscellaneous

368 90, G07C 130, G04F 102

Patent

active

055285635

ABSTRACT:
A timer comprising a lamination containing a piece of porous wick material 1, and a reservoir of liquid 6, said liquid 6 and/or said porous wick 1 being such that when the reservoir is opened and the liquid 6 released it soaks into the porous wick 1 to thereby create a visible trace of the liquid on or in the porous wick; a face part 2 of the lamination being transparent such that said visible trace can be seen; said wick material 1 having imposed thereon or positioned adjacent thereto a series of markings which cover the time range over which the timer is to be used. The invention also provides a method of manufacturing the timer.

REFERENCES:
patent: 3620677 (1971-11-01), Morison
patent: 4137049 (1979-01-01), Couch et al.
patent: 4229813 (1980-10-01), Lilly et al.
patent: 4298115 (1981-11-01), Bradlet et al.

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