4. Registers
  5. Calculators
  6. Photographic

Ralph Holmes

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Calculator and apparatus for macrophotography

Registers – Calculators – Photographic
Patent

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Calculator and apparatus for macrophotography

Illumination – Photographic lighting – Measuring or indicating
Patent

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Connection assembly for use with an articulated linkage system

Joints and connections – Articulated members – Branched
Patent

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Electronic flash unit assembly

Electric lamp and discharge devices: systems – Condenser in the supply circuit – Condenser in shunt to the load device and the supply
Patent

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Method and system for processing data records from a telephone d

Telephonic communications – With usage measurement – Call charge metering or monitoring
Patent

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Profile ID: LFUS-PAI-P-363277

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