US1157028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanism for regulating the charging rate of storage batteries.
Assignee: Sangamo Electric Co
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Filing: 1911-11-23
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Granted: 1915-10-19
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Expires: 1931-11-23
Abstract
No abstract record available.
Inventors
- 👤 Warren Noble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:16
CPC Classifications
H; H03; H03G; H03G1/00; H03G1/0005; H03G1/0035; H03G1/0052; Y; Y10; Y10S; Y10S320/00; Y10S320/22
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) | 1918-10-18 | 1919-04-19 | 1919-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-10-18 | 1923-04-19 | 1923-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-10-18 | 1927-04-19 | 1927-10-19 | $7700.00 | Window Closed / Lapsed |