US2663505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary impact hammer for pulverizers
Assignee: Individual
•
Filing: 1951-07-17
•
Granted: 1953-12-22
•
Expires: 1971-07-17
Abstract
No abstract record available.
Inventors
- 👤 Charles E Sennholtz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:22
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/26; B02C13/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1186071A
Cited
US1491416A
Cited
US1491417A
Cited
US1630021A
Cited
US2534301A
Cited
US2531597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |