Thanks Lonnie, but I found the Canadian patent on IBM Wednesday night. Its internal mechanism looks more complex but less prone to piston float than the AENG design. Now of course T.L.Chicken (no relation to TLC) has come up with an even more recent patent. Where will it end. I have found these patents prior to the Canadian:
# 927297 Tuckfield ,,7/1909 1181463 La Fontaine,,5/1916 1255664 Syger,, 2/1918 1389873 Hult,, 9/1921 1569525 Owens,, 1/1926 1628100 Bacon,, 5/1927 1666539 Michell,, 4/1928 1793107 Livingston,, 2/1931 2556585 Jarvinen.. 6/1951 1783751 Karlan,, 3/1957 3456630 Karlan.,, 7/1969
How is it posible for so many patents, but no commercial development?
246810 |