2 ms·
Also seems to reference 'Method of exercising a cat', http://www.google.co.uk/patents/US5443036 http://www.google.co.uk/patents/US5443036
by cskau 14y ago
Also seems to reference 'Method of exercising a cat', http://www.google.co.uk/patents/US5443036 http://www.google.co.uk/patents/US5443036