Solar air heating.
Contributors: Synergism, inc.; United States. Patent and Trademark Office.
Series: PAT-AB, U.S. patent abstracts
Publisher: Synergism, inc.
Published: 1978
Place of publication: Locust Grove, Va
Language: eng
Subjects: Solar heating -- Patents.; Patents -- United States.
Notes: "Abstracts ... made from copies of patents purchased from the U.S. Patent and Trademark Office."
Table of contents: title: v. 1. 1855-1963.; title: v. 2. 1964-1977.