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US2440145A
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Electric vibratory interrupter
Assignee: Duracell Inc USA
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Filing: 1944-02-07
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Granted: 1948-04-20
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Expires: 1964-02-07
Abstract
No abstract record available.
Inventors
- 👤 Huetten Clarence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:04
CPC Classifications
H; H04; H04M; H04M19/00; H04M19/02; H01; H01H; H01H50/00; H01H50/64; H01H50/74; H01H50/76; H02; H02M; H02M7/00; H02M7/42; H02M7/54; H02M7/58; H02M7/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-20 | 1951-10-20 | 1952-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-20 | 1955-10-20 | 1956-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-20 | 1959-10-20 | 1960-04-20 | $7700.00 | Window Closed / Lapsed |