US2823244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric accumulators
Assignee: Individual
•
Filing: 1955-08-02
•
Granted: 1958-02-11
•
Expires: 1975-08-02
Abstract
No abstract record available.
Inventors
- 👤 Brown Francis Leonard Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:18
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/06; H01M10/12; H01M10/123; H01M4/00; H01M4/02; H01M4/14; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
AN ELECTRIC STORAGE CELL COMPRISING IN COMBINATION, A POSITIVE ELEMENT INCLUDING AN INNER BASE CORE OF A MATERIAL NOT ACTED ON BY THE ACID ELECTROLYTE, LEAD ON SAID CORE, POSITIVE ACTIVE MATERIAL, AND AN OUTER CORD ROUNDING SAID POSITIVE ACTIVE MATERIAL, AND AN OUTER CORD WOUND AROUND SAID FLEXIBLE PERVIOUS MATERIAL; A NEGATIVE ELEMENT INCLUDING A CYLIDRICAL PERFORATE METALLIC PLATE CONCENTRIC WITH SURROUNDING SAID POSITIVE ELEMENT, A LAYER OF ACTIVE NEGATIVE MATERIAL COATED ON THE OUTSIDE OF
Claim 2
Dependent Claim
77 words
AN ELECTRIC STORAGE CELL COMPRISING IN COMBINATION, A POSITIVE ELEMENT INCLUDING AN INNER BASE CORE OF A MATERIAL NOT ACTED ON BY THE ACID ELECTROLYTE, LEAD ON SAID CORE, POSITIVE ACTIVE MATERIAL, AND AN OUTER CORD ROUNDING SAID POSITIVE ACTIVE MATERIAL, AND AN OUTER CORD WOUND AROUND SAID FLEXIBLE PERVIOUS MATERIAL; A NEGATIVE ELEMENT INCLUDING A CYLIDRICAL PERFORATE METALLIC PLATE CONCENTRIC WITH SURROUNDING SAID POSITIVE ELEMENT, A LAYER OF ACTIVE NEGATIVE MATERIAL COATED ON THE OUTSIDE OF
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-10 | 1961-08-12 | 1962-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-10 | 1965-08-12 | 1966-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-10 | 1969-08-12 | 1970-02-11 | $7700.00 | Window Closed / Lapsed |