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:
Dec. 13, 1983
Filed:
Feb. 26, 1982
Applicant:
Inventor:
Robert L Howe, San Ramon, CA (US);
Assignee:
Delta Associates, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ; H05B / ; F27D / ;
U.S. Cl.
CPC ...
219400 ; 73 231 ; 126 / ; 99476 ; 219386 ; 219413 ;
Abstract
A temperature controlled oven apparatus having a central chamber with a heater element and a pivotal inner baffle door, located within a removable outer access door, periodically opened or closed to regulate the exhaust of oven air and the admission of ambient air into the oven through a preheated plenum chamber.
Howe, Robert. (1983). Gas chromatographic oven using symmetrical flow of preheated - premixed (U.S. Patent No. 4420679). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4420679
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile