The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Oct. 03, 1989

Filed:

Aug. 17, 1988
Applicant:
Inventors:

Thomas A McMillan, North Palm Beach, FL (US);

Henry W Mitchell, Palm Beach Gardens, FL (US);

Assignee:

Other;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
13762412 ; 137413 ; 239 70 ; 239310 ;
Abstract

An apparatus for directing a liquid fertilizer into an irrigation system having a liquid fertilizer flow conduit with the valve of a solenoid valve and the float of a float switch located in series and an electric circuit with the switch of the float switch, solenoid of the solenoid valve and automatic timer device in series. The apparatus directs fertilizer therethrough when electricity is delivered to the switch, solenoid, and automatic timer device when the switch is closed by the float and the timer is conducting electricity.


Find Patent Forward Citations

McMillan, Thomas. (1989). Lawn sprinkler fertilizer device (U.S. Patent No. 4870991). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4870991

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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