US3410387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the handling of start sheets for electrolytic refinement of copper
Assignee: C J WENNBERGS MEKANISKA VERKSTAD AB
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Filing: 1966-12-12
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Granted: 1968-11-12
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Expires: 1986-12-12
Abstract
No abstract record available.
Inventors
- 👤 Wennberg Olov Carl Gustav
- 👤 Forsberg Georg Lenn Konstantin
- 👤 Svensson Stern Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:53
CPC Classifications
C; C25; C25C; C25C1/00; C25C1/12
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) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |