US2696913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Revolving current flotation machine
Assignee: Individual
•
Filing: 1949-12-08
•
Granted: 1954-12-14
•
Expires: 1969-12-08
Abstract
No abstract record available.
Inventors
- 👤 Charles M Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:32
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/14; B03D1/16; B03D1/02; B03D1/028; B03D1/1406; B03D1/1443; B03D1/1456; B03D1/1493; B03D1/1412
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1413723A
Cited
US1457077A
Cited
US1744785A
Cited
US1942803A
Cited
US1963122A
Cited
US2054249A
Cited
US2143669A
Cited
US2168942A
Cited
US2178239A
Cited
DE681212C
Cited
US2259243A
Cited
US2252576A
Cited
GB584306A
Cited
US2466995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-13 | 1958-06-14 | 1958-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-13 | 1962-06-14 | 1962-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-13 | 1966-06-14 | 1966-12-14 | $7700.00 | Window Closed / Lapsed |