US2763907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnesium anode with perforated core
Assignee: Dow Chemical Co
•
Filing: 1952-08-29
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Granted: 1956-09-25
•
Expires: 1972-08-29
Abstract
No abstract record available.
Inventors
- 👤 Douglas Burke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:21
CPC Classifications
C; C23; C23F; C23F13/00; C23F13/02; C23F13/06; C23F13/08; C23F13/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US198707A
Cited
GB190100343A
Cited
US2097508A
Cited
US2204823A
Cited
US2459123A
Cited
US2645612A
Cited
US2620297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |