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Mullen Replaceable Vault Light Company
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Mullen Replaceable Vault Light Co letterhead

Location:

Mullen Replaceable Vault Light Company lens No. 10, embossed MRVL Co. Mullen Replaceable Vault Light Company lens No. 20
Lens No. 10
"M R V L Co."
Lens No. 20
  • Fulton Building, Pittsburgh, PA
    General Offices, Hartje Building

Timeline:

  • 1914-1922-?

History:

Gallery:

Bill Mullen, grandson of founder Leo,
provided the following photos and scans:

Sales Kit Items
MRVL Co sales kit items MRVL Co sales kit items MRVL Co sales kit items MRVL Co sales kit items

MRVL Co sales kit items MRVL Co sales kit items


Completed MRVL Installations
Mullen Replaceable Vault Light Co canopy (skylight) installation Mullen Replaceable Vault Light Co vault light installation

Patents:

Identifier Mon DD Year Inventor(s) Patent Title
US 1,081,979 Dec 23 1913 Mullen, L. G. Transparent Pavement
US D45,123 Jan 6 1914 Mullen, L. G. Design for a Prism-Lens
CA 158,484 Oct 20 1914 Mullen, L. G. Transparent Pavement
GB 1,147 Jul 1 1915 Mullen, L. G. Glass Paving Blocks
FR 477,642 Nov 3 1915 Mullen, L. G. Pavé en verre
US 1,180,412 Apr 25 1916 Mullen, L. G. Transparent Pavement

Paper: