US2705253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primary battery
Assignee: Burgess Battery Co
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Filing: 1953-10-01
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Granted: 1955-03-29
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Expires: 1973-10-01
Abstract
No abstract record available.
Inventors
- 👤 Fredrick J Kirkman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:58
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/42; H01M6/46
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
111 words
A FLAT CELL BATTERY MADE UP OF A PLUARLITY OF FLAT CELL ELEMENTS IN JUXTAPOSED LAMINAR RELATION, COMPRISING A PLURALITY OF ELECTRODE UNITS AND DEPOLARIZER MIX SLABS STACKED IN ALTERNATING SUCCESSION, EACH SAID ELECTRODE UNIT COMPRISING THE FOLLOWING: A FLEXIBLE, IMPERVIOUS, DIELECTRIC SHEET HAVING AN APERTURE THEREIN, POSITIVE AND NEGATIVE ELECTRODES ADJACENT TO THE OPPOSITE BROAD SURFACES OF SAID SHEET RESPECTIVELY AND OVERLYING SAID APERTURE, SAID SHEET BEING OF GREATER AREA THAN SAID ELECTRODES WHEREBY A PERIPHERAL MARGIN OF SAID SHEET EXTENDS BEYOND THE EDGES OF SAID ELECTRODES, A RING OF ELECTROLYTE-RESISTANT ADHESIVE ON EACH SIDE OF SAID SHEET AND SURROUNDING SAID APERTURE AND ATTACHING SAID SHEET TO SAID ELECTRODES RE-
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-28 | 1958-09-27 | 1959-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-28 | 1962-09-27 | 1963-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-28 | 1966-09-27 | 1967-03-29 | $7700.00 | Window Closed / Lapsed |