US2445398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibrator system
Assignee: Duracell Inc USA
•
Filing: 1944-08-18
•
Granted: 1948-07-20
•
Expires: 1964-08-18
Abstract
No abstract record available.
Inventors
- 👤 Huetten Clarence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:47
CPC Classifications
H; 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)
US1563488A
Cited
US1964268A
Cited
US2065597A
Cited
US2213553A
Cited
GB524880A
Cited
US2401600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-20 | 1952-01-19 | 1952-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-20 | 1956-01-19 | 1956-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-20 | 1960-01-19 | 1960-07-20 | $7700.00 | Window Closed / Lapsed |