These are previous selections of the Gallery of Historic Patents

Archive page: 2 - 1


US00200521
The Phonograph-(speaking machine)

Thomas A Edison (1878)

  The Phonograph-(speaking machine)

The space telegraphy-(vacuum tube)   US00879532
The space telegraphy-(vacuum tube)

Lee DeForest (1908)


US00006281
The Safety Pin

Walter Hunt (1849)

  The Safety Pin

Roller skate   US00088711
Roller skate

Isaac Hodgson (1869)
US00088583
A Fire Extinguisher

William Parker (1869)

   A Fire Extinguisher

Grain Harvester   US00757126
Grain Harvester

Edwin M Kellogg (1904)

US00076831
The Lawn Mower

S.W. Sears (1868)

   The Lawn Mower

An improved submarine   US00581213
An improved submarine

Simon Lake (1897)

US00381968
The electromagnetic motor

Nikola Tesla (1888)

   The electromagnetic motor

The Rotary Steam Engine   US00403335
The Rotary Steam Engine

Joseph H Dow & Herbert H Dow (1889)
US00078317
Explosive Compound		              Alfred Nobel (1868)

Archive page: 2 - 1

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