Air valve for pipelines

Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a front perspective view of an air valve for pipelines showing my new design;

FIG. 2 is a rear elevational view thereof; and

FIG. 3 is a side elevational view thereof.

Referenced Cited
U.S. Patent Documents
D100707 August 1936 McCracken
D106585 October 1937 Russel
D115543 July 1939 Cornell, Jr.
1261044 April 1918 McCracken
3002522 October 1961 Klinefetter
3834415 September 1974 Herron
Patent History
Patent number: D246533
Type: Grant
Filed: Mar 15, 1976
Date of Patent: Nov 29, 1977
Assignee: George Kent (Malaysia) Berhad
Inventor: William Henry Brockbank (Petaling Jaya)
Primary Examiner: James R. Largen
Attorney: Alvin Browdy
Application Number: 5/666,953
Classifications
Current U.S. Class: D23/19
International Classification: D2301;