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.
Patent No.:
Date of Patent:
Apr. 12, 1977
Filed:
Mar. 04, 1975
Tomikazu Osaka, Fukui, JA;
Morihisa Otsuka, Fukui, JA;
Abstract
A drain trough having longitudinally lined plastic round pipes and plastic connectors for connecting the pipes to each other in order to form a long drain trough. The plastic pipes each has slits longitudinally and intermittently extending and formed in the peripheral wall of the pipe. The inner space of the pipe has a partition wall of various shapes, which wall extending along the length of the pipe so as to divide the space into two, three or four compartments, through which drain water flows. The drain trough is slantly buried in the ground or track and field.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile