Among his inventions are an egg-killing birdbath that can run on batteries, solar power or electricity.

Among his inventions are the Petzval lens and opera glasses, both still in common use today.

Among his inventions were an early version of what now is the spinning reel for fishing and a guitar which could play chords.

Perhaps the underlying fascination of the city for the artist is that great cities are themselves among mankind's most extravagant inventions.

Among his inventions may be mentioned a machine for making fuel from wheat straw, and a smoke-consuming device.

Among his most important inventions was a frame in a separate honey chamber of his beehive.

Among his inventions there was a device to cut European sprat for the tinned food industry in the city.

Among his inventions were flexible saws hidden in shoe laces for special agents.

A belief in the notion that great companies could stand among humankind's noblest inventions.

Among his inventions was an electronic device for accelerating the production of penicillin.