DK34883C
(en )
1925-08-17
Apparatus for Cleaning the Pipes in Water Pipe Boilers.
DK32666C
(en )
1923-12-24
Apparatus for Cleaning the Pipes in Water Pipe Boilers.
DK44737C
(en )
1931-10-26
Apparatus for Cleaning the Pipes in Water Pipe Boilers.
FR646131A
(en )
1928-11-07
Advanced Pipe Fittings
DK30600C
(en )
1922-11-06
Apparatus for cleaning flue pipes or similar in steam boilers.
DK39229C
(en )
1928-09-10
Apparatus for Cleaning Steam Boilers.
SU9990A1
(en )
1929-06-29
Device for cleaning water pipes
DK31296C
(en )
1923-02-12
Apparatus for Sealing Heating Pipes in Boiler Walls.
DK40670C
(en )
1929-08-26
Device for Water Pipe Boilers.
DK35478C
(en )
1926-01-04
Water pipe boiler.
DK35506C
(en )
1926-01-18
Water pipe boiler.
DK35769C
(en )
1926-03-15
Water pipe boiler.
DK35941C
(en )
1926-05-03
Water pipe boiler.
DK36419C
(en )
1926-08-23
Water pipe boiler.
DK37945C
(en )
1927-09-19
Cleaning box for sewer pipes.
DK42191C
(en )
1930-05-12
Water pipe boiler.
DK43692C
(en )
1931-02-09
Filter-free Apparatus for Purifying Boiler Water.
ES98074A1
(en )
1926-08-01
Drawer for cleaning the sewer pipes.
DK39194C
(en )
1928-09-03
Apparatus for Heating Water.
ES91857A1
(en )
1925-03-16
New construction system for grafts in pipes.
FR662637A
(en )
1929-08-09
Device for cleaning pipe pipes
FR659911A
(en )
1929-07-04
Steam boiler for cleaning the beer pipes used for the said flow
DK39220C
(en )
1928-09-10
Water pipe steam boiler.
DK38840C
(en )
1928-06-04
Apparatus for knocking off boiler stones on boiler pipes and pipe plates.
DK52447C
(en )
1936-12-14
Procedure for Cleaning Water Pipes.