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Title: English 'invisible fused' bifocal spectacles with oval lense [Go to resource]
Description: English 'invisible fused' bifocal spectacles with oval lenses and semi-circular segments. Patent No. 18158, in 1905, stamped Dunscombe, Bristol License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: spectacles Temporal: 1905 Source: Science Museum Creator: M. W. Dunscombe Ltd. Identifier: 1921-323/194 Go to resource More Like this...
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