US2657457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous metal production and continuous gas plating
Assignee: Commonwealth Engineering Company of Ohio
•
Filing: 1949-09-10
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Granted: 1953-11-03
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Expires: 1969-09-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry A Toulmin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:00
CPC Classifications
B; B22; B22D; B22D11/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/49798; Y10T29/4998; Y10T29/49982; Y10T29/49984
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2118701A
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US2219004A
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US2363695A
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US2332309A
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US2344138A
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US2290083A
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US2382432A
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US2442485A
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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) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |