Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Patent
1980-08-11
1981-07-21
Andrews, M. J.
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
40 275, 428926, 428935, B32B 1500
Patent
active
042799686
ABSTRACT:
A blank suitable for minting to form a coin or similarly disc-shaped article has an appropriately disc-shaped steel core completely encased by a copper coating electroplated thereof. The blank is produced by electroplating a copper coating onto an appropriately disc-shaped steel core such that the copper coating completely encases the steel core.
REFERENCES:
patent: 3636616 (1972-01-01), Remning et al.
patent: 3750253 (1973-08-01), Miller
Clegg Maurice A.
Ruscoe Michael J. H.
Sarkar Kshitindra M.
Andrews M. J.
Delbridge Robert F.
Fors Arne I.
Sherritt Gordon Mines Limited
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