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A 77.313:209
|
Fast-motion sifting machine. |
1 |
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A77.313..209
|
Fast-motion sifting machine. |
1 |
|
A 77.313:210
|
Air-pressure tank for pneumatic application of liquid fumigants. |
1 |
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A77.313..210
|
Air-pressure tank for pneumatic application of liquid fumigants. |
1 |
|
A 77.313:211
|
Chemical determination of DDT. |
1 |
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A77.313..211
|
Chemical determination of DDT. |
1 |
|
A 77.313:212
|
Hopper mechanism for distribution of baits and dust by airplanes for insect control. |
1 |
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A77.313..212
|
Hopper mechanism for distribution of baits and dust by airplanes for insect control. |
1 |
|
A 77.313:213
|
Laboratory method for rearing and parasitizing California red scale for toxicological studies. |
1 |
|
A77.313..213
|
Laboratory method for rearing and parasitizing California red scale for toxicological studies. |
1 |
|
A 77.313:214
|
Duster for laboratory experiments with insecticides. |
1 |
|
A77.313..214
|
Duster for laboratory experiments with insecticides. |
1 |
|
A 77.313:215
|
Experimental methods in making orchard tests for codling moth control in the West. |
1 |
|
A77.313..215
|
Experimental methods in making orchard tests for codling moth control in the West. |
1 |
|
A 77.313:216
|
Dispenser for aerosols and highly volatile fumigants. |
1 |
|
A77.313..216
|
Dispenser for aerosols and highly volatile fumigants. |
1 |
|
A 77.313:217
|
Small injector for use in mixing sprays. |
1 |
|
A77.313..217
|
Small injector for use in mixing sprays. |
1 |
|
A 77.313:218
|
Air-pressure tank for use in field application of liquid sprays. |
1 |
|
A77.313..218
|
Air-pressure tank for use in field application of liquid sprays. |
1 |
