Patent US3544309A successfully refreshed from Google Patents.
US3544309A
Expired / Lapsed
US
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Recovery of constituents from metal alloy scrap
Assignee: Charter Consolidated Ltd
•
Filing: 1967-11-06
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Granted: 1970-12-01
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Expires: 1987-11-06
Abstract
No abstract record available.
Inventors
- 👤 Archibald William Fletcher
- 👤 Eric Raymond Baggott
- 👤 Raymond Derry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:37
CPC Classifications
C; C22; C22B; C22B7/00; C22B7/006; C22B7/007; C22B3/00; C22B3/20; C22B3/26; C22B3/28; C22B3/282; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2694005A
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US2867503A
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US2803537A
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US3193381A
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US3224874A
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US3196005A
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US3251650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |