US2159409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scum collector
Assignee: Link Belt Co
•
Filing: 1935-07-15
•
Granted: 1939-05-23
•
Expires: 1955-07-15
Abstract
No abstract record available.
Inventors
- 👤 Marcus B Tark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:17
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/10; B01D21/12; B01D21/24; B01D21/2433
Claims Analysis
Total Claims: 0
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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) | 1942-05-22 | 1942-11-21 | 1943-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-05-22 | 1946-11-21 | 1947-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-05-22 | 1950-11-21 | 1951-05-23 | $7700.00 | Window Closed / Lapsed |