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Davis & Magee Patent
Demmler Bros
Demmler Bros. II
Demmler Bros. II Marking
Demmler Bros. Front Side
  Demmler Bros. Front Side Marking.jpg - DEMMLER BROS. MONONGAHELA VALLEY - Tin face lamp, 2 in. tall to lid, 1 9/16 in. base dia., marked MONONGAHELA VALLEY DEMMLER BROS. PITTSBURGH, PA. in a shield with a star at the bottom, double spout  (While brothers Hugh and Louis Demmler started their business in Pittsburgh in 1860, they entered the wick lamp supply business in 1889 advertising Demmler Bros. as the successors to C. Cherry wick lamps.  Cherry wick lamps are very hard to find lamps with a trademark of two cherries on a stem.   The Demmlers were unable to acquire the trademark so the stamping on Demmler lamps was changed to side by side stampings of CHIRRY with a four-quartered circle in between the names.  The company continued to supply wick lamps until 1902 selling both face and driver wick lamps with the Chirry marking, Demmler Bros. marking as shown elsewhere in the pics, and Demmler Bros. Monongahela Valley stampings as shown here.  It's interesting to note that other Monongahela Valley stampings have the John Dunlap Co. stamped within the crest (see photos elsewhere in oilwick lamps).  See Johnson, Eureka #4, pp 1-3)  
Demmler Bros. Hinge Side
DL I
DL II
DP Highberger Irwin PA
DP Highberger Wilkinsburg PA

Demmler Bros. Front Side Marking | DEMMLER BROS. MONONGAHELA VALLEY - Tin face lamp, 2 in. tall to lid, 1 9/16 in. base dia., marked MONONGAHELA VALLEY DEMMLER BROS. PITTSBURGH, PA. in a shield with a star at the bottom, double spout (While brothers Hugh and Louis Demmler started their business in Pittsburgh in 1860, they entered the wick lamp supply business in 1889 advertising Demmler Bros. as the successors to C. Cherry wick lamps. Cherry wick lamps are very hard to find lamps with a trademark of two cherries on a stem. The Demmlers were unable to acquire the trademark so the stamping on Demmler lamps was changed to side by side stampings of CHIRRY with a four-quartered circle in between the names. The company continued to supply wick lamps until 1902 selling both face and driver wick lamps with the Chirry marking, Demmler Bros. marking as shown elsewhere in the pics, and Demmler Bros. Monongahela Valley stampings as shown here. It's interesting to note that other Monongahela Valley stampings have the John Dunlap Co. stamped within the crest (see photos elsewhere in oilwick lamps). See Johnson, Eureka #4, pp 1-3) Download Original Image
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