An extractor is a word for a fan that you often find in bathrooms. An antonym for extractor is introducer.
There are many places one might find an oil extractor. Oil extractors are very popular throughout the United States of America. One might easily find a recently installed extractor in Texas.
Try e-gunparts.com
e-gunparts.com
The extractor for a model 170 Savage Arms 30-30 can be purchased through Numrich catalogs. You can also find this part in the Brownell's catalog available at many gun stores.
have you checked with MIDWAY.COM
dust find it
Numrich gun parts
Try e-gunparts.com, gun store, gun show.
you can find a zebra in the dust bin
Numrich gun parts part # 999050A $14.75 + shipping
You can find cooker extractor hoods at Ikea or John Lewis. They can also be found online on eBay or Amazon. There are many different designs and sizes so you should look around for the right one.