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Patent
   D300350
Priority
Dec 12 1985
Filed
Dec 12 1985
Issued
Mar 21 1989
Expiry
Mar 21 2003
Inventors
Mathison, …
Assg.orig
Cherne Ind…
Assg.curr
CHERNE ACQ…
Entity
unknown
Referenced by
16
References
10
Maint.:
n/a
The ornamental design for an expansible sealing plug for pipelines and the like, as shown and described.

FIG. 1 is an isometric view taken from the front and side of an expansible sealing plug for pipelines and the like showing my new design;

FIG. 2 is an isometric view taken from the rear and side thereof;

FIG. 3 is an isometric view taken from the front and side of a modified form of the expansible sealing plug for pipelines and the like shown in FIGS. 1 and 2; and

FIG. 4 is an isometric view taken from the rear and side of FIG. 3;
INVENTORS:

Mathison, Allen D.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
5785090, Mar 06 1991 Pipeline stopper plug and method therefore
6427725, Aug 14 2000 Pipeline lateral packer and felt combinations and methods therefor
6725468, Feb 11 2002 SMITH MOLINA, INC Combination plug device and cover plate
D329686, Jun 14 1990 Cherne Industries Incorporated Pipe plug latch unit
D329687, Jun 14 1990 Cherne Industries Incorporated Pipe plug lock unit
D346201, Sep 06 1991 Kerr-McGee Chemical LLC Portable storm drain cover
D351013, Jan 15 1992 Cherne Industries Incorporated Mechanical inspection and sealing plug for a monitoring well
D700299, Dec 17 2012 Low profile pool drain with circular grid cover
D701293, Dec 17 2012 Low profile pool drain with annular slot cover
D706000, Sep 30 2013 THE Kyjen Company, LLC Pet bowl
D706001, Feb 09 2014 THE Kyjen Company, LLC Pet bowl
D787937, Mar 31 2016 Powers and Sons, LLC Protective cap
D883449, Apr 16 2018 GTR Innovations, LLC Subfloor closet flange spacer
D900980, Apr 16 2018 GTR Innovations, LLC Subfloor closet flange spacer
D945262, Dec 20 2019 Overlay cap for bottles
ER296,
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
2154498,
2720893,
3291156,
3613936,
4250926, Jun 25 1976 MECHANICAL RESEARCH & DESIGN, INC Closure device with peripheral double acting inflatable seal
437289,
4493344, Apr 13 1983 CHERNE ACQUISITION INCORPORATED, AN OH CORP Mechanical plug device
4585033, Oct 13 1983 Equipment for closing conduits
209379,
D257057, Aug 15 1977 LSP Specialty Products Company Pipe test cap
ASSIGNMENT RECORDS    Assignment records on the USPTO
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Dec 12 1985Cherne Industries, Inc.(assignment on the face of the patent)
Jun 25 1987CHERNE INDUSTRIES, INC , A MN CORP CHERNE ENTERPRISES, INC , A MN CORP CHANGE OF NAME SEE DOCUMENT FOR DETAILS EFFECTIVE JUNE 30, 19870052640580 pdf
Oct 26 1988MATHISON, ALLEN D CHERNE INDUSTRIES, INC ASSIGNMENT OF ASSIGNORS INTEREST 0049680880 pdf
Dec 29 1989CHERNE ENTERPRISES, INC , A MN CORP CHERNE ACQUISITION INCORPORATED, AN OH CORP ASSIGNMENT OF ASSIGNORS INTEREST 0052640584 pdf
Dec 29 1989CHERNE INDUSTRIES INC , A MN CORP CHERNE ACQUISITION INCORPORATED, AN OH CORP ASSIGNMENT OF ASSIGNORS INTEREST 0052640584 pdf
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