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Patent
   D376193
Priority
Mar 08 1995
Filed
Mar 08 1995
Issued
Dec 03 1996
Expiry
Dec 03 2010
Inventors
Lennartsso…
Assg.orig
PROTOL A G
Assg.curr
Spiro SA
Entity
unknown
Referenced by
8
References
13
Maint.:
n/a
The ornamental design for a helically wound lock-seam tube, as shown and described.

FIG. 1 is a perspective view of a helically wound lock-seam tube, showing my new design as seen obliquely from the side; and,

FIG. 2 is an end view of the helically wound lock-seam tube.
INVENTORS:

Lennartsson, Kenneth

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
7775076, Jan 20 2006 Pinch-point lock-seam tubing, pinch point seaming devices, and methods for manufacturing stabilized lock-seam tubing
D522654, May 29 2003 Tayside Flow Technologies Limited Vascular tubing
D524442, May 29 2003 Tayside Flow Technologies Limited Vascular tube
D526718, May 29 2003 Tayside Flow Technologies Limited Vascular tubing
D566826, Jan 28 2007 G L V INTERNATIONAL 1995 LTD Flexible duct
D567946, May 29 2003 Tayside Flow Technologies Limited Vascular tube
D730494, Dec 13 2012 RLS LLC Crimp fitting for joining tubing
D799012, Jun 24 2014 Kobe Steel, Ltd. Heat exchanger tube
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
192079,
224228,
2888043,
4706481, Jun 18 1985 Lindab AB Apparatus for cutting hollow pipe
470738,
683519,
213828,
D296355, Nov 09 1984 KANAO, SHIGEKI Corrugated pipe
GB1168179,
GB1212221,
GB2213748,
WO8600123,
WO8911351,
ASSIGNMENT RECORDS    Assignment records on the USPTO
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Mar 06 1995LENNARTSSON, KENNETHPROTOL A G ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0073930871 pdf
Mar 08 1995Protol A.G.(assignment on the face of the patent)
Feb 22 2011PROTOL A G Spiro SAASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0263640567 pdf
MAINTENANCE FEES AND DATES:    Maintenance records on the USPTO
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