AU2903930A
(en )
1931-06-18
Improvements in the foundation of brick and stone buildings
AU2903930B
(en )
1931-06-18
Improvements in the foundation of brick and stone buildings
CA305965A
(en )
1930-11-25
Hydraulic mortar and cement
AU2818930A
(en )
1931-08-13
Improvements in the manufacture of concrete roofing tiles
AU2732830A
(en )
1930-10-21
Improvements in the manufacture of cement concrete goods and in cement concrete consturctional work
CA306711A
(en )
1930-12-16
Building block and wall construction
CA304685A
(en )
1930-10-14
Building unit and construction
AU2487930A
(en )
1931-02-05
Improvements in and connected with the construction of buildings
AU2524230A
(en )
1931-01-06
Improvements in and connected withthe construction of buildings
AU2917730A
(en )
1931-02-05
Improvements in and connected withthe construction of buildings
CA299317A
(en )
1930-04-15
Building block and wall
AU2681530A
(en )
1931-05-28
Improvements inthe construction of concrete culverts and like structures
AU3082830A
(en )
1932-01-07
Improvements in and relating to building elements and structures
AU2818930B
(en )
1931-08-13
Improvements in the manufacture of concrete roofing tiles
CA303304A
(en )
1930-08-26
Cement brick and block machine
CA290864A
(en )
1929-06-25
Stone and marble manufacture
AU74426A
(en )
1926-08-31
Improvements in and relating to the construction of buildings
CA300082A
(en )
1930-05-13
Concrete building form
AU412626A
(en )
1928-01-17
Improvements in and relating tothe construction of buildings
AU2142129A
(en )
1929-10-08
Improvements in the manufacture of concrete pipes and the like and apparatus therefor
AU2732830B
(en )
1930-10-21
Improvements in the manufacture of cement concrete goods and in cement concrete consturctional work
AU1234228A
(en )
1929-04-09
Improvements in the manufacture of ceramic and roofing tiles and building slabs
AU2713430A
(en )
1931-02-12
Improvements in andin connection with concrete building blocks
AU2487930B
(en )
1931-02-05
Improvements in and connected with the construction of buildings
CA278743A
(en )
1928-03-20
Roofing and building material