Patent US3481411A successfully refreshed from Google Patents.
US3481411A
Expired / Lapsed
US
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Sonic tool with means for reducing noise level
Assignee: Black and Decker Corp
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Filing: 1968-02-19
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Granted: 1969-12-02
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Expires: 1988-02-19
Abstract
No abstract record available.
Inventors
- 👤 John W Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:43
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/0078; B23Q11/0096; B25; B25D; B25D17/00; B25D17/11; Y; Y10; Y10S; Y10S173/00; Y10S173/02
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) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |