US2447047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibrator
Assignee: Duracell Inc USA
•
Filing: 1944-06-10
•
Granted: 1948-08-17
•
Expires: 1964-06-10
Abstract
No abstract record available.
Inventors
- 👤 Robert J Aust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:34
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/64; H01H50/74; H01H50/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US524165A
Cited
US650531A
Cited
US714020A
Cited
US1187000A
Cited
US1920150A
Cited
US1924082A
Cited
US2065597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-17 | 1952-02-16 | 1952-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-17 | 1956-02-16 | 1956-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-17 | 1960-02-16 | 1960-08-17 | $7700.00 | Window Closed / Lapsed |