Drilldown: Patents
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Patents > Filing date:
1800 - 1899
& National tech categories:
USPC 244/30
& First filing :
No or
Other
Use the filters below to narrow your results.
Albert Livingstone Blackman (2) ·
Aristarchus F. Hubbard (1) ·
Carl E. Myers (1) ·
Carl G. E. Hennig (1) ·
Carlotta Myers (1) ·
Charles P. Fest (1) ·
Edward De Jongh (1) ·
Eugene F. Falconnet (2) ·
Gustav Koch (1) ·
Hugh Bell (1) ·
Hurgar Hunnicutt (1) ·
James Richardson (1) ·
Joachim Adolfowicz Sumovski (1) ·
Joel Ray (1) ·
John Arbtin (1) ·
Louis-Étienne Roze (1) ·
Manoel Vianna Coutinho (1) ·
Martin Braun (1) ·
Nicholas Helmer (1) ·
Otto Francis (1) ·
Solomon Andrews (1) ·
Stewart Cairncross (2) ·
Zaphna Stone (1)
None (4) ·
Albert Livingstone Blackman (2) ·
Aristarchus F. Hubbard (1) ·
Carl G. E. Hennig (1) ·
Charles P. Fest (1) ·
Edward de Jongh (1) ·
Eugene F. Falconnet (2) ·
Gustav Koch (1) ·
Hugh Bell (1) ·
Hurgar Hunnicutt (1) ·
Joachim Adolfowicz Sumovski (1) ·
Joel Ray (1) ·
John Arbtin (1) ·
Louis-Étienne Roze (1) ·
Manoel Vianna Coutinho (1) ·
Martin Braun (1) ·
Nicholas Helmer (1) ·
Otto Francis (1) ·
Solomon Andrews (1) ·
Zaphna Stone (1)
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Showing below up to 25 results in range #1 to #25.