US2640091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery
Assignee: Willard Storage Battery Co
•
Filing: 1950-07-15
•
Granted: 1953-05-26
•
Expires: 1970-07-15
Abstract
No abstract record available.
Inventors
- 👤 Leo E Pucher
- 👤 William A Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:11
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/30; H01M6/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A BATTERY COMPRISING A NEGATIVE PLATE HAVING MAGNESIUM AS THE ACTIVE AGENT AND A POSITIVE PLATE HAVING ITS ACTIVE MATERIAL COMPRISING ESSENTIALLY HYDRATED CUPROUS CHLORIDE.
Claim 2
Dependent Claim
25 words
A BATTERY COMPRISING A NEGATIVE PLATE HAVING MAGNESIUM AS THE ACTIVE AGENT AND A POSITIVE PLATE HAVING ITS ACTIVE MATERIAL COMPRISING ESSENTIALLY HYDRATED CUPROUS CHLORIDE.
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) | 1956-05-25 | 1956-11-24 | 1957-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-25 | 1960-11-24 | 1961-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-25 | 1964-11-24 | 1965-05-26 | $7700.00 | Window Closed / Lapsed |