US2534403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primary cell
Assignee: Burgess Battery Co
•
Filing: 1949-01-19
•
Granted: 1950-12-19
•
Expires: 1969-01-19
Abstract
No abstract record available.
Inventors
- 👤 Ivan C Blake
- 👤 John B Mullen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:14
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/58; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
IN A PRIMARY CELL, POSITIVE AND NEGATIVE ELECTRODES AND A DEPOLARIZER COMPRISING AN IONIZ-
Claim 2
Dependent Claim
14 words
IN A PRIMARY CELL, POSITIVE AND NEGATIVE ELECTRODES AND A DEPOLARIZER COMPRISING AN IONIZ-
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) | 1953-12-18 | 1954-06-19 | 1954-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-18 | 1958-06-19 | 1958-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-18 | 1962-06-19 | 1962-12-19 | $7700.00 | Window Closed / Lapsed |