Patent US1000421A successfully refreshed from Google Patents.
US1000421A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primary electric battery.
Assignee: Individual
•
Filing: 1909-05-29
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Granted: 1911-08-15
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Expires: 1929-05-29
Abstract
No abstract record available.
Inventors
- 👤 George A Lutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:18
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/06; H01M10/12; H01M10/16; Y; Y02; Y02E; Y02E60/00; Y02E60/10
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) | 1914-08-14 | 1915-02-13 | 1915-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-08-14 | 1919-02-13 | 1919-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-08-14 | 1923-02-13 | 1923-08-15 | $7700.00 | Window Closed / Lapsed |