US2466037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flotation process and apparatus
Assignee: Individual
•
Filing: 1943-12-10
•
Granted: 1949-04-05
•
Expires: 1963-12-10
Abstract
No abstract record available.
Inventors
- 👤 Harry L Mcneill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:07
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/02; B03D1/028; B03D1/14; B03D1/1406; B03D1/1443; B03D1/1462; B03D1/1475; B03D1/1487; B03D1/24; B03D1/242; 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)
DE115255C
Cited
US374346A
Cited
US555515A
Cited
US615093A
Cited
GB174379A
Cited
US1985153A
Cited
GB458583A
Cited
US2238139A
Cited
US2246559A
Cited
US2246560A
Cited
US2348990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-04 | 1952-10-04 | 1953-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-04 | 1956-10-04 | 1957-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-04 | 1960-10-04 | 1961-04-05 | $7700.00 | Window Closed / Lapsed |