Patent US2826730A successfully refreshed from Google Patents.
US2826730A
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US
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Storage battery charging plant, with generator powered by a component revolving at variable r. p. m. and in both directions
Assignee: Individual
•
Filing: 1954-11-29
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Granted: 1958-03-11
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Expires: 1974-11-29
Abstract
No abstract record available.
Inventors
- 👤 Biffi Emilio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:52
CPC Classifications
H; H02; H02K; H02K19/00; H02K19/16; H02K19/22; H02K19/24; H02J; H02J7/00; H02J7/14; H02J7/16; H02J7/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US559419A
Cited
USRE18516E
Cited
US1183411A
Cited
US1443073A
Cited
FR512158A
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US1631574A
Cited
US1921841A
Cited
US2117019A
Cited
GB554827A
Cited
US2557298A
Cited
US2519650A
Cited
US2607910A
Cited
US2651749A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-10 | 1961-09-09 | 1962-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-10 | 1965-09-09 | 1966-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-10 | 1969-09-09 | 1970-03-11 | $7700.00 | Window Closed / Lapsed |