Laboratory filter
Description
FIG. 1 is a perspective view of a laboratory filter embodying my new design, the broken lines being for illustration purposes only;
FIG. 2 is a side elevational view thereof;
FIG. 3 is a top plan view thereof; and
FIG. 4 is a bottom plan view thereof.
Referenced Cited
U.S. Patent Documents
90523 | May 1869 | Goodfellow |
181532 | August 1876 | Melbert |
D185115 | May 1959 | Beerman |
D270947 | October 11, 1983 | Mehra et al. |
Patent History
Patent number: D285487
Type: Grant
Filed: Jul 18, 1983
Date of Patent: Sep 2, 1986
Assignee: Trend Scientific, Inc. (Minneapolis, MN)
Inventor: Gerald P. Tjernagel (North Mankato, MN)
Primary Examiner: A. Hugo Word
Assistant Examiner: Stella M. Reid
Law Firm: Kinney & Lange
Application Number: 6/514,623
Type: Grant
Filed: Jul 18, 1983
Date of Patent: Sep 2, 1986
Assignee: Trend Scientific, Inc. (Minneapolis, MN)
Inventor: Gerald P. Tjernagel (North Mankato, MN)
Primary Examiner: A. Hugo Word
Assistant Examiner: Stella M. Reid
Law Firm: Kinney & Lange
Application Number: 6/514,623
Classifications
Current U.S. Class:
D24/29