|
COAL EXTRACTION |
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| TOM REEL |
BAG | ITEM | FRAMES | |
|
EXTRACTION of coals, peat, bituminous shale under high pressure, German 707,813 |
224 |
10259-10260 |
||
|
20083-20084 |
||||
|
, pressure, of coals, peat, bituminous shale, etc., German 711,380 |
224 |
10272-10273 |
||
|
20096-20098 |
||||
|
Do., German 711,711 and 711,712 |
224 |
10274-10277 |
||
|
20099-20102 |
||||
|
, pressure, of coal, peat, shales, etc. in presence of catalyst, German 714,909 |
224 |
10281-10282 |
||
|
20106-20107 |
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|
EXTRACTS from all kinds of coal, such as bituminous, brown coal, or peat, production of, German 663,497 |
8 |
2732 |
3 |
20 52-20 53 |
|
from solid fuels, production of, Pott-Broche, German 633,391, addition to 632,631 |
8 |
2732 |
3 |
20 49-20 51 |
|
, pressure, of bituminous coal treating, A Pott and H. Broche, German 693,646 |
8 |
2732 |
3 |
10 109-10 110 |
|
PATENT rights for extractive hydrogenation, discussions between I.G. and Uhde on |
8 |
2732 |
3 |
20 69-20 73 |
|
REJECTION of Broches claims, patent office |
8 |
2732 |
3 |
10 112-10 115 |