Patent
   D329687
Priority
Jun 14 1990
Filed
Jun 14 1990
Issued
Sep 22 1992
Expiry
Sep 22 2006
Assg.orig
Entity
unknown
4
11
n/a
The ornamental design for the pipe plug lock unit, as shown and described.

FIG. 1 is a top perspective view of a pipe plug unit showing our new design;

FIG. 2 is a right side elevational view thereof, the left side being a mirror image of the right side;

FIG. 3 is a top plan view thereof;

FIG. 4 is another top perspective view thereof showing the unit in an open position;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevation view thereof.

The broken line representation of a pipe plug in FIGS. 1, 2 and 4 and a lock in FIGS. 2 and 4 are for purposes of illustration only and forms no part of the claimed design.

Mathison, Allen D., Benson, Bryan R.

Patent Priority Assignee Title
5348085, Feb 01 1993 Cherne Industries Incorporated Mechanical plug device
6883546, Mar 20 2003 Lockable compression plug assembly for hermetically sealing an opening in a part, such as the end of a tubular member
D347880, Nov 16 1992 Cherne Industries Incorporated Well monitor plug
D696384, Jun 30 2011 Combined base and valve configuration for countertop water filter
Patent Priority Assignee Title
3672403,
4370919, Jan 29 1981 WHEELABRATOR ENGINEERED SYSTEMS INC Vent cap assembly for a monitoring well
4415005, Jul 27 1981 Pipe thread protector device
4614206, Nov 14 1985 CHERNE ACQUISITION INCORPORATED, AN OH CORP Expansible pneumatic plug device
4762151, Jul 07 1986 THOMAS & BETTS INTERNATIONAL, INC , A CORP OF DELAWARE Blank plug assembly
208016,
242521,
D257218, Nov 08 1977 Toggle joint fastener
D283246, Mar 11 1983 WEL-LOC INC , A CORP OF OK Locking valve cover
D300350, Dec 12 1985 CHERNE ACQUISITION INCORPORATED, AN OH CORP Expansible sealing plug for pipelines and the like
D305927, Mar 27 1986 Swagelok Company Nut lock plate
///
Executed onAssignorAssigneeConveyanceFrameReelDoc
Jun 13 1990BENSON, BRYAN R CHERNE INDUSTRIES INCORPORATED, A CORP OF OHASSIGNMENT OF ASSIGNORS INTEREST 0053570341 pdf
Jun 13 1990MATHISON, ALLEN D CHERNE INDUSTRIES INCORPORATED, A CORP OF OHASSIGNMENT OF ASSIGNORS INTEREST 0053570341 pdf
Jun 14 1990Cherne Industries Incorporated(assignment on the face of the patent)
n/a
Date Maintenance Fee Events


n/a
Date Maintenance Schedule