Patent US2197709A successfully refreshed from Google Patents.
Patent US1536491A successfully refreshed from Google Patents.
US1536491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pebble mill
Assignee: Individual
•
Filing: 1924-02-02
•
Granted: 1925-05-05
•
Expires: 1944-02-02
Abstract
No abstract record available.
Inventors
- 👤 Gunderoth Charles Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:49
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/04; B28; B28C; B28C5/00; B28C5/08; B28C5/0806; B28C5/0831; B28C5/0843
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1928-05-04 | 1928-11-03 | 1929-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-05-04 | 1932-11-03 | 1933-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-05-04 | 1936-11-03 | 1937-05-05 | $7700.00 | Window Closed / Lapsed |