Patent US3928842A successfully refreshed from Google Patents.
US3495976A
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Method of separating a layer of gold from a base of non-ferrous or rare metals or their alloys
Assignee: Moskovsky Zavod Vtorichnykh Dragotsennykh Metallov
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Filing: 1964-12-22
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Granted: 1970-02-17
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Expires: 1984-12-22
Abstract
No abstract record available.
Inventors
- 👤 Viktor Mamertovich Bazilevsky
- 👤 Andronik Pogosovich Amarian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:29
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/44; C22; C22B; C22B11/00; C22B11/04; C22B11/042; C22B11/06; C22B7/00; C22B7/006; C22B7/007; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |