US2209185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery unit
Assignee: AT&T Inc
•
Filing: 1939-04-22
•
Granted: 1940-07-23
•
Expires: 1959-04-22
Abstract
No abstract record available.
Inventors
- 👤 Justus H Bower
- 👤 James C Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:16
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/42; H01M6/44; H01M50/00; H01M50/20; H01M50/204; H01M50/207; H01M50/213
Claims Analysis
Total Claims: 0
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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) | 1943-07-23 | 1944-01-22 | 1944-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-07-23 | 1948-01-22 | 1948-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-07-23 | 1952-01-22 | 1952-07-23 | $7700.00 | Window Closed / Lapsed |