US3481792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uncharged dry cells with a biurea depolarizer
Assignee: Wyeth Holdings LLC
•
Filing: 1967-12-11
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Granted: 1969-12-02
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Expires: 1987-12-11
Abstract
No abstract record available.
Inventors
- 👤 Stanley Myron Davis
- 👤 Charlotte Marie Kraebel
- 👤 Richard Alfred Parent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:11
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/60; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3040114A
Cited
US3357865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |