US2595963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primary electric cell
Assignee: Burndept Ltd
•
Filing: 1948-03-01
•
Granted: 1952-05-06
•
Expires: 1968-03-01
Abstract
No abstract record available.
Inventors
- 👤 Lewis Richard Walter
- 👤 Richardson Richard Percy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:41
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/30; H01M50/394; H01M50/10; H01M50/147; H01M50/148; H01M50/154; H01M6/00; H01M6/04; H01M6/06; H01M6/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
AN ELECTRIC PRIMARY DRY CELL COMPRISING A CONTAINER OF ZINC FORMING ITS NEGATIVE ELECTRODE AND ENCLOSING THE ACTIVE PARTS OF THE CELL, SAID CONTAINER BEING SEALED AT ITS MOUTH, AND A PLASTIC SHEATHING STRETCHED AROUND THE SIDE WALL OF THE CONTAINER AND SEALED AT ITS TOP AND BOTTOM EDGES TO THE CONTAINER TO FORM A TIGHT ENCLOSURE AROUND THE CONTAINER, THE CONTAINER HAVING A SMALL PERFORATION IN THE PART OF ITS SIDE WALL BETWEEN THE TOP AND BOTTOM EDGES TO WHICH THE SHEATHING IS SEALED AND ENCLOSED BY THE SHEATHING AND BEYOND
Claim 2
Dependent Claim
92 words
AN ELECTRIC PRIMARY DRY CELL COMPRISING A CONTAINER OF ZINC FORMING ITS NEGATIVE ELECTRODE AND ENCLOSING THE ACTIVE PARTS OF THE CELL, SAID CONTAINER BEING SEALED AT ITS MOUTH, AND A PLASTIC SHEATHING STRETCHED AROUND THE SIDE WALL OF THE CONTAINER AND SEALED AT ITS TOP AND BOTTOM EDGES TO THE CONTAINER TO FORM A TIGHT ENCLOSURE AROUND THE CONTAINER, THE CONTAINER HAVING A SMALL PERFORATION IN THE PART OF ITS SIDE WALL BETWEEN THE TOP AND BOTTOM EDGES TO WHICH THE SHEATHING IS SEALED AND ENCLOSED BY THE SHEATHING AND BEYOND
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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) | 1955-05-06 | 1955-11-05 | 1956-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-06 | 1959-11-05 | 1960-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-06 | 1963-11-05 | 1964-05-06 | $7700.00 | Window Closed / Lapsed |