I am not sure how many types of forend ejectors actually made it to production, but Lefever had several patents on them. Their 1892 catalog lists forend ejectors on which the ejectors could be "Turned Off" by removing the forend & turning down a screw thus taking the spring tension from them.
The inframe ejectors did come out while the two-hook cokers were still being built which was prior to 1900 & superceded the forend ejector I believe.
Perhaps someone who has looked at a lot more of the early guns than I can give you a more definitive answer but in short Yes they did produce some forend ejectors.
