Patent US3263139A successfully refreshed from Google Patents.
Patent US2500169A successfully refreshed from Google Patents.
US2500169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery filler device having a puncturing element for piercing an evacuated battery enclosing can
Assignee: United States, WAR, Secretary of
•
Filing: 1944-09-06
•
Granted: 1950-03-14
•
Expires: 1964-09-06
Abstract
No abstract record available.
Inventors
- 👤 Grenville B Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:31
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/30; H01M6/36; H01M6/38; H01M50/00; H01M50/60; H01M50/609
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |