|
GB715888A
|
|
An improved method of and means for air conditioning
|
|
GB669776A
|
|
A new or improved time-lag device for use with electric switches
|
|
GB665853A
|
|
A new or improved electric ozone generator
|
|
GB665835A
|
|
A new or improved air-conditioning appliance
|
|
US2456407A
|
|
Machine for producing screwthreads
|
|
GB580188A
|
|
Improvements in measuring instruments
|
|
US2403075A
|
|
Machine for producing screw threads
|
|
GB572496A
|
|
Improved means for dressing the operative surface of grinding or cutting tools
|
|
GB565223A
|
|
Improvements in machines for producing screwthreads or other metal turning or grinding machines
|
|
GB332260A
|
|
Improvements in loud speakers
|
|
GB276816A
|
|
Improvements in or relating to shoes for golfers and the like
|
|
GB250068A
|
|
Improvements in or relating to refrigerating apparatus
|
|
US1623871A
|
|
Refrigeration and cold storage
|
|
GB246330A
|
|
Improvements in or relating to cooking ranges
|
|
GB236605A
|
|
Improvements relating to refrigeration and cold storage
|
|
GB244532A
|
|
Improvements in or relating to refrigerating apparatus
|
|
GB244508A
|
|
Improvements in stuffing box joints for use with refrigerators, applicable for otherpurposes
|
|
GB238260A
|
|
Improvements in and relating to regulating valves for refrigerating apparatus
|
|
GB223686A
|
|
Improvements in printing mechanism for ticket-dating machines and the like
|
|
GB206944A
|
|
Improvements in electric switches
|
