Fred's note detailing other Registrations from Seago, taken from the Great Glass site, has gone - presumably for obvious reasons.
Having looked through Jenny Thompson, I can see 5 designs only from 1874/75, not the 6 as mentioned on Great Glass - someone tell me please if I've missed one............. I can see:-
Rd. 280660 - 23.02.1874 - ink well
288498/9/500 - 16.01.1875 - butter/marmalade/marmalade
289821 - 09.03.1875 - the ice pail we've already discussed
297633 - 09.01.1876 - presently no idea what this refers to
303996 - 02.10.1876 - butter dish
309484/85 - 18.04.1877 - again, presently no idea about these two.
the above descriptions are taken directly from the original factory drawings, of which I can see nine in total for the period 1874 to 1877.