US3473967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a dry cell battery provided with a protective closure
Assignee: Alcoa Corp
•
Filing: 1967-06-23
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Granted: 1969-10-21
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Expires: 1987-06-23
Abstract
No abstract record available.
Inventors
- 👤 Charles J Leftault Jr
- 👤 Robert L La Barge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:00
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/50; H01M50/572; H01M50/598; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/4911
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB967418A
Cited
US3220885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |