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1921-03-15
Improvements in concrete andthe like building construction
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1920-05-11
Concrete building
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1922-05-23
Concrete building construction
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1921-09-13
Improvements in concrete construction
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1920-09-14
Concrete building
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1926-09-07
Improvements in the formation of concrete buildings
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1920-06-06
Improvements in sectional building construction
CA201938A
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1920-07-13
Reinforced concrete building block
CA198156A
(en )
1920-03-16
Concrete construction
CA206589A
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1920-12-21
Concrete construction
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1920-11-09
Improvements in concrete buildings
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1920-09-21
Building construction
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1920-09-28
Building construction
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1920-11-23
Building construction
CA198912A
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1920-04-06
Building construction
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1921-04-05
Improvements in and relating to the construction of concrete buildings
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1922-08-08
Improvements in and relating to concrete building construction
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1921-08-30
Improved concrete construction and means therefor
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1921-08-02
Improvements connected with moulds for concrete buildings andthe like
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1923-08-07
Improvements in concrete building construction
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1923-08-07
Improvements in concrete building construction
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1921-12-20
Improvements in building construction
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1927-08-16
Building construction
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1921-05-31
Improvements in and relating to building construction of concrete plaster and the like
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1920-01-13
Concrete structure