No
No. You can own a firearm.
Never
It depends on whether they were charged with a felony offense, or not. ANY felony crime will deny a convicted person ever possessing a firearm under federal law.
No. Expungement does not make your conviction go away.
The question refers to a California petty theft statute - If that statue is NOT a felony offense, then yes, you may own or possess a firearm.
In Canada police approval is required to purchase any type of firearm. Such a conviction would prevent police approval.Added: In the US - any conviction for Domestic Violence is a bar to firearm ownership.
After a felony conviction, you may never own, purchase, possess, or be granted access to firearms ever again.
Never, unless their conviction gets overturned - not expunged, not pardoned, but actually overturned.
No. If you get a felony conviction anywhere, you may not own, purchase, or have access to firearms anywhere else. That's federal law.
In the United States, there is no certain number of years. If you are a felon, you cannot own a gun unless you have successfully petitioned to have your gun rights restored.
No. A conviction of a crime of domestic violence prevents you from owning or possessing a firearm.