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John Bunt Willcock
Henry Curtis
William Stokes
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8339. Willcock, J. B., Curtis, H., and Stokes, W. April 1. Building-blocks for arches, drains, sewers, flues, ovens, &c. The edges of the blocks are formed with interlocking ribs and recesses, and the joints may be made tight by placing cement in the recesses, and rubbing or pressing the edges of the blocks together.
GB189708339D1897-04-011897-04-01Improvements in Fire and other Brick Blocks.
ExpiredGB189708339A
(en)