US2345235A
(en )
1944-03-28
Lighting fixture
US1138552A
(en )
1915-05-04
Illuminating-mirror.
DE1358913U
(enrdf_load_stackoverflow )
Hopkinson
1965
A proposed luminance basis for a lighting code
Metcalf
1970
Library lighting
US2269278A
(en )
1942-01-06
Changeable name strip directory
ITTO950390A1
(it )
1996-11-17
Pannello di affissione e di segnalazione.
US1630281A
(en )
1927-05-31
Eye-testing cabinet
US1523737A
(en )
1925-01-20
Automobile body advertising panel
GB411112A
(en )
1934-05-22
A new or improved illuminated scenic device for decorative or practical purposes
US2003126A
(en )
1935-05-28
Sign
US1956185A
(en )
1934-04-24
Illuminated sign
DE561253C
(de )
1933-08-14
Zeichenplatte
DE505873C
(de )
1930-08-28
Nicht blendender Hohlspiegelreflektor mit einem diffus reflektierenden Reflektor
US1279197A
(en )
1918-09-17
Illuminated sign.
DE285506C
(enrdf_load_stackoverflow )
US1888406A
(en )
1932-11-22
Display card
US2462941A
(en )
1949-03-01
Desk lamp
Weston et al.
1928
The Effect of Different Systems of Lighting on Output and Accuracy in Fine Work:(typesetting by Hand)
GB196899A
(en )
1923-12-06
Process for obtaining, on the same support, different pictures rendered alternately visible by a modification of the lighting
GB209201A
(en )
1924-01-07
Improvements in and relating to the illumination of rooms & the like by external sources of light
DE593033C
(de )
1934-02-20
Vorrichtung zur Erzeugung von Lichtstreifen
GB248276A
(en )
1926-03-04
Improvements in and relating to signs
GB305502A
(en )
1929-02-04
Improvements in signs
Jakubauskas
1966
Job opportunities for Iowa's youth