Patent US2670326A successfully refreshed from Google Patents.
US2670326A
Expired / Lapsed
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Producing curved electrotypes
Assignee: Electrographic Corp
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Filing: 1950-09-20
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Granted: 1954-02-23
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Expires: 1970-09-20
Abstract
No abstract record available.
Inventors
- 👤 George W Bungay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:10
CPC Classifications
B; B41; B41C; B41C3/00; B41C3/08; B41C1/00; B41C1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A PROCESS OF FORMING CYLINDRICALLY CURVED ELECTROTYPES WHICH COMPRISES MOLDING A PLURALITY OF FLEXIBLE ELECTROTYPE MOLDS FORM ONE OR MORE FLAT PRINTING PLATES TO BE DUPLICATED AS CURVED ELECTROTYPES, JOINING SAID MOLDS TOGETHER ALONG ADJACENT EDGES OF SEPARATE PLATES, CYLINDRRICALLY CURVING SAID MOLDS WITH THE DESIGN SURFACE OF THE MOLDS AS THE CONCAVE SURFACE, ELECTRODESPOSIT-
Claim 2
Dependent Claim
55 words
A PROCESS OF FORMING CYLINDRICALLY CURVED ELECTROTYPES WHICH COMPRISES MOLDING A PLURALITY OF FLEXIBLE ELECTROTYPE MOLDS FORM ONE OR MORE FLAT PRINTING PLATES TO BE DUPLICATED AS CURVED ELECTROTYPES, JOINING SAID MOLDS TOGETHER ALONG ADJACENT EDGES OF SEPARATE PLATES, CYLINDRRICALLY CURVING SAID MOLDS WITH THE DESIGN SURFACE OF THE MOLDS AS THE CONCAVE SURFACE, ELECTRODESPOSIT-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |