CH58249A
(en )
1913-03-01
Device for closing the longitudinal seam of pipes by means of electrical resistance welding
CH58463A
(en )
1913-03-17
Electric pipe welding machine
CH69212A
(en )
1915-06-01
Clamp for connecting branch pipes
CH60397A
(en )
1913-07-16
Device for stretching the urethra
CH59208A
(en )
1913-05-02
Device to prevent the seam edges from jumping over one another when electrically welding the longitudinal seams of pipes
CH58724A
(en )
1913-04-01
Method of closing the longitudinal seam of pipes with the help of resistance welding
DK16778C
(en )
1912-12-16
Electric Pipe Welding Machine.
DK16229C
(en )
1912-07-22
Device for welding the longitudinal seam on pipes by means of electrodes placed on both sides of the seam.
CH58510A
(en )
1913-03-17
Device for connecting electrodes
CH59753A
(en )
1913-06-02
Device for storing several toothbrushes
CH63395A
(en )
1914-01-16
Tool for straightening pipes
CH73054A
(en )
1916-08-16
Device for re-tensioning a catenary
CH62604A
(en )
1913-12-01
Drawing device for drawing multiple lines
CH54190A
(en )
1912-05-01
Pipe vice
CH59824A
(en )
1913-06-02
Device on beaded gutters for connecting the same
CH74053A
(en )
1917-01-02
Pipe joint
CH66461A
(en )
1914-09-16
Device for cleaning pipes
AU94411B
(en )
1912-05-07
An improved joint for pipes
CH74459A
(en )
1917-03-01
Electric welding device
CH53380A
(en )
1912-02-16
Device for aligning and pressing two rails together for the purpose of butt welding
FR442110A
(en )
1912-08-24
Pipe joint
CH59826A
(en )
1913-06-02
Welded tubular railing
FR446542A
(en )
1912-12-07
Method and machine for electric welding
CH56913A
(en )
1912-12-02
Device for conveying a liquid
FR517858A
(en )
1921-05-14
Pipe joint