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Number:
71/53
Name:
Chemistry: fertilizers
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Processes and products
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Inorganic material
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Phosphorus-containing
>
Phosphates
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Products
> Containing carbonates, oxides, sulfates, or halides
Description:
Products which contain also inorganic carbonates, oxides, sulphates, or halides, not hereinabove provided for.
Patents under this class:
1
2
Patent Number
Title Of Patent
Date Issued
4010897
Method and apparatus for home production and application of nitrogen fertilizer
Mar. 8, 1977
3992184
Slow-release fertilizers
Nov. 16, 1976
3979199
Treatment of phosphate rock in soil to provide fertilizer and gypsum
Sep. 7, 1976
3979198
Polyurethane plant growth medium
Sep. 7, 1976
3936392
Anti-caking of potassium bisulfate and resulting compositions
Feb. 3, 1976
1
2
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