These are standard pharmacy bottles, in 1,2 and 4 ounce sizes. They certainly may be of the 1940's era. but they were made well into the 1960s. They were used by the pharmacist to dispense liquid medications to patents, and also as as stock bottles for liquid medications used in a clinic, surgery, dispensary. Most water, oil, alcohol based liquid medications would have been put in this type of container.
Hope this helps,