US2881570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary smoother and desmudger
Assignee: Pangborn Corp
•
Filing: 1957-06-18
•
Granted: 1959-04-14
•
Expires: 1977-06-18
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Moore
- 👤 Jr Charles H Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:51
CPC Classifications
B; B24; B24B; B24B29/00; B24B29/005; B24B7/00; B24B7/10; B24B7/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1836364A
Cited
US2055665A
Cited
US2269197A
Cited
US2358572A
Cited
US2720062A
Cited
US2680938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |