US3399441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed recoilless chisel device
Assignee: Individual
•
Filing: 1965-12-13
•
Granted: 1968-09-03
•
Expires: 1985-12-13
Abstract
No abstract record available.
Inventors
- 👤 Imamura Yukio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:41
CPC Classifications
B; B08; B08B; B08B7/00; B08B7/02; B08B7/022; B25; B25D; B25D11/00; B25D11/06; B25D11/062; B25D17/00; B25D17/06; B25D17/08; B25D2250/00; B25D2250/275; B25D2250/285; B25D2250/291; Y; Y10; Y10T; Y10T29/00; Y10T29/45; Y10T29/4572; Y10T29/4578; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/18336
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) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |