Publication number
|
Priority date
|
Publication date
|
Assignee
|
Title
|
US305147A
|
1884-09-16
|
Electric railroad
| ||
US477240A
|
1892-06-21
|
John h
| ||
US890852A
|
1908-01-28
|
1908-06-16
|
Wilhelm Ellingen
|
Carriage for ropeways.
|
US903656A
|
1907-10-29
|
1908-11-10
|
Moss W Beardsley
|
Cable-adjuster.
|
US1065976A
|
1912-07-17
|
1913-07-01
|
Ole Slette
|
Litter-carrier.
|
US1137040A
|
1913-11-13
|
1915-04-27
|
George H Weber
|
Overhead carrier.
|
US1305415A
|
1919-06-03
|
steffens
| ||
US1313358A
|
1919-08-19
|
w atkins
| ||
US1431536A
|
1922-01-21
|
1922-10-10
|
Maloney William
|
Light railway
|
DE479861C
|
1927-04-22
|
1929-08-02
|
Franz Kruckenberg Dipl Ing
|
Role current collector having a plurality of two opposing sides of a bus bar in contact with current collector rollers
|
US1776765A
|
1926-08-05
|
1930-09-23
|
Oilgear Co
|
Feed brake for milling machines and the like
|
US1853570A
|
1927-09-10
|
1932-04-12
|
Firm Adolf Bleichert & Co A G
|
Car for passenger ropeways
|
US1860241A
|
1929-09-19
|
1932-05-24
|
Galko Paul
|
Elevated electric railway
|
DE609175C
|
1932-09-17
|
1935-02-08
|
Foerderanlagen Heckel
|
Device for Pendelseilhaengebahnen with two load equal proportions pulling tension cables
|
US2018087A
|
1932-04-28
|
1935-10-22
|
William C Plass
|
Means of transportation
|
US2102784A
|
1936-02-06
|
1937-12-21
|
Socony Vacuum Oil Co Inc
|
Method of making a wear indicating tire
|
US2140585A
|
1936-11-25
|
1938-12-20
|
American Steel & Wire Co
|
Rope tramway
|
US2228411A
|
1940-01-16
|
1941-01-14
|
Leslie M Sheridan
|
Hydraulic drive for motor vehicles
|
US2582201A
|
1948-04-03
|
1952-01-08
|
Samuel S Huntington
|
Ski lift
|
US2630074A
|
1948-04-19
|
1953-03-03
|
Robert W Pointer
|
Cable connector
|
US2639676A
|
1950-12-04
|
1953-05-26
|
Paul N Travis
|
Cable supported propelling device
|
US2803486A
|
1954-11-12
|
1957-08-20
|
Victor S Larson
|
Hook for logging arch cable
|
US2949864A
|
1956-04-23
|
1960-08-23
|
Forderanlagen Ernst Heckel M B
|
Cable railway for passengers
|
US3067695A
|
1958-07-10
|
1962-12-11
|
Shea Patrick Hall
|
Aerial cable connector assembly
|
lunedì 21 maggio 2018
PRECEDENTI STORICI-Historical precedents of innovation
Ci sono molti brevetti precedenti a quello di Frank P. Pettit e quindi il suo brevetto si può definire come una innovazione dei precendenti, e non come una vera e propria invenzione.
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