You are here: Home »Research
William Renard Pilkington (1913) Patent for 'Pilkington’s Mechanical Equation Table', page 1. 2956.
William Renard Pilkington (1913) Patent for 'Pilkington’s Mechanical Equation Table', page 2. 2956.
William Renard Pilkington (1913) Patent for 'Pilkington’s Mechanical Equation Table', page 3. 2956.
William Renard Pilkington (1913) Patent for 'Pilkington’s Mechanical Equation Table', page 4. 2956.
William Renard Pilkington (1913) Patent for 'Pilkington’s Mechanical Equation Table', spec. 2956.