US2916430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic cell
Assignee: Carwin Co
•
Filing: 1958-01-13
•
Granted: 1959-12-08
•
Expires: 1978-01-13
Abstract
No abstract record available.
Inventors
- 👤 Carl E Van Winckel
- 👤 Click Lawry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:40
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/17; C25B9/19; C25B9/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US679985A
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US1052256A
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US1094728A
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US1272397A
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US1360541A
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US1464840A
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US1365875A
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US1864767A
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US1860676A
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DE585596C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |