US3447758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple impact breaker
Assignee: Individual
•
Filing: 1965-07-22
•
Granted: 1969-06-03
•
Expires: 1985-07-22
Abstract
No abstract record available.
Inventors
- 👤 Nicolas Oznobichine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:01
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/02; B02C13/06; B02C13/09; B02C13/095; B02C13/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1472609A
Cited
US2411302A
Cited
US2665074A
Cited
US2644644A
Cited
US2891734A
Cited
US2977055A
Cited
US3058676A
Cited
US3083921A
Cited
US3224688A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |