US2724734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode for electric batteries
Assignee: Yardney International Corp
•
Filing: 1952-11-22
•
Granted: 1955-11-22
•
Expires: 1972-11-22
Abstract
No abstract record available.
Inventors
- 👤 Paul L Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:09
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/24; H01M4/26; H01M4/64; H01M4/70; H01M4/72; H01M4/74; H01M4/75; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US489315A
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US940043A
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US994451A
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US1228551A
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US1381387A
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US1895397A
Cited
US2050172A
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US2389894A
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US2561943A
Cited
US2594710A
Cited
US2654795A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |