US2730581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual storage battery switch
Assignee: Individual
•
Filing: 1953-07-19
•
Granted: 1956-01-10
•
Expires: 1973-07-19
Abstract
No abstract record available.
Inventors
- 👤 Bruno Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:30
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14; H02J7/1423
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2096378A
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US1288938A
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US1290701A
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US1671196A
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US1656562A
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FR654470A
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US2085275A
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US2152405A
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US2226850A
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US2335526A
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US2575147A
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US2564957A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |