FR1045678A
(en )
1953-11-30
Method and device for cleaning and, more particularly for removing dust from external heat exchange surfaces of tubes, coils, or the like
CH295365A
(en )
1953-12-31
Cleaning supplies.
CH299306A
(en )
1954-06-15
Process and equipment for performing mechanical cleaning of pipes used for the transport of fluids.
CH276721A
(en )
1951-07-31
Process for the manufacture of soap pieces and plant for the realization of this process.
CH274155A
(en )
1951-03-31
Apparatus for the formation of aerosols.
SU77938A1
(en )
1948-11-30
The method of cleaning evaporators from scale
CH301598A
(en )
1954-09-15
Ozone apparatus.
CH304127A
(en )
1954-12-31
Group of taps for bathrooms and the like.
SU74976A1
(en )
1948-11-30
The method of obtaining abrasive products
SU75222A2
(en )
1948-11-30
The method of obtaining pipes
CH298687A
(en )
1954-05-15
Ozone apparatus.
CH264852A
(en )
1949-11-15
Process for the manufacture of asbestos-cement slabs and equipment for its realization.
CH318419A
(en )
1957-01-15
cleaning supplies
FR1052742A
(en )
1954-01-26
Apparatus for cleaning pipes
CH258067A
(en )
1948-11-15
Process for stoning revolved surfaces and device for carrying out said process.
CH312436A
(en )
1955-12-31
Process for the preparation of an acylaminodiol.
CH307922A
(en )
1955-06-30
Cleaning supplies.
FR1024614A
(en )
1953-04-03
Method and apparatus for the manufacture of celluloses and semi-celluloses
GR12337B
(en )
1950-02-06
CALCULATION FOR THE TEACHING OF FAMILY NUMBERS.
FR1082189A
(en )
1954-12-27
Apparatus for sterilizing bottles or the like
NL175154B
(en )
EQUIPMENT FOR CLEANING OR PRESERVATION OF SHIPWALLS.
BE506574A
(en )
1953-03-13
PROCESS FOR THE PREPARATION OF PYRIDOINES AND PYRIDINALDEHYDES.
GR13226B
(en )
1951-10-20
METHOD AND PREPARATIONS FOR CLEANING AND MAINTENANCE OF NAILON SOCKS.
CH283678A
(en )
1952-06-30
Process for the manufacture of tubes with mixtures suitable for hardening and apparatus for carrying out this process.
GR12690B
(en )
1950-11-02
METHOD OF USING THE TELEPHONE DIRECTORAL CATALOG OF THE CITY.