GB189322523A - An Improved Construction of Cover or Grating for Covering Openings or Receptacles, and in the Means Employed for Operating the said Grating or Cover.
- Google Patents
An Improved Construction of Cover or Grating for Covering Openings or Receptacles, and in the Means Employed for Operating the said Grating or Cover.
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William Ives
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Individual
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Individual
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GB189322523D1893-11-241893-11-24An Improved Construction of Cover or Grating for Covering Openings or Receptacles, and in the Means Employed for Operating the said Grating or Cover.
ExpiredGB189322523A
(en)