Patent US3200857A successfully refreshed from Google Patents.
Patent US667996A successfully refreshed from Google Patents.
US1399995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Negative plate for electric accumulators
Assignee: Individual
•
Filing: 1919-09-18
•
Granted: 1921-12-13
•
Expires: 1939-09-18
Abstract
No abstract record available.
Inventors
- 👤 Pouchain Adolfo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:36
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/04; H01M4/0438; H01M4/045; H01M4/0452; H01M4/64; H01M4/66; H01M4/665; H01M4/667; H01M2004/026; H01M2004/027; H01M4/36; H01M4/38; H01M4/42; H01M4/661; H01M4/663; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1924-12-12 | 1925-06-13 | 1925-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-12-12 | 1929-06-13 | 1929-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-12-12 | 1933-06-13 | 1933-12-13 | $7700.00 | Window Closed / Lapsed |