Patent US4472891A successfully refreshed from Google Patents.
US4472891A
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US
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Bimetallic composite coin blank for coins, medals and the like
Assignee: INSTITUTO POLIGRAFICO E ZECCA DELLO STATO
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Filing: 1982-08-16
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Granted: 1984-09-25
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Expires: 2002-08-16
Abstract
Abstract A coin blank for the coining of coins, medals and like products, obtained by the forced joining of two metal parts, each of them being of different metal or metal alloy, one forming the internal central part and the other the external perimetrical part, said forced joining of said two component parts being carried out, in a definitive and inseparable way, preferably upon the minting operation.
Inventors
- 👤 Nicola Ielpo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:58
CPC Classifications
A; A44; A44C; A44C3/00; A44C3/004; A44C21/00; B; B44; B44B; B44B5/00; B44B5/008; G; G07; G07F; G07F1/00; G07F1/06; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/927; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49934; Y10T428/00; Y10T428/12; Y10T428/12229; Y10T428/12236; Y10T428/12243; Y10T428/12451; Y10T428/21
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
86 words
A bimetallic coin blank for coins, medals and the like comprising: (a) an internal part formed by a first metal; (b) an external part formed by a second metal, said external part having a central opening constructed and arranged to receive said internal part, the internal edge of said central opening being tapered; (c) a plurality of projections integral with said tapered internal edge disposed radially about said central opening; and (d) the outer peripheral rim of said internal part being thicker than said external part.
Claim 2
Dependent Claim
86 words
A bimetallic coin blank for coins, medals and the like comprising: (a) an internal part formed by a first metal; (b) an external part formed by a second metal, said external part having a central opening constructed and arranged to receive said internal part, the internal edge of said central opening being tapered; (c) a plurality of projections integral with said tapered internal edge disposed radially about said central opening; and (d) the outer peripheral rim of said internal part being thicker than said external part.
Claim 3
Dependent Claim
19 words
The bimetallic coin blank according to claim 1, wherein the outer peripheral rim of the external part is thickened.
Claim 4
Dependent Claim
27 words
The bimetallic coin blank according to claims 1 or 2, wherein said external and internal parts are inseparably joined through a coining operation in a coin press.
References Cited (Backward Citations)
US632938A
Cited
GB413829A
Cited
US2098892A
Cited
CH191288A
Cited
US3499739A
Cited
GB1483700A
Cited
GB2019195A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-25 | 1988-03-26 | 1988-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-25 | 1992-03-26 | 1992-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-25 | 1996-03-26 | 1996-09-25 | $7700.00 | Window Closed / Lapsed |