US2249049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scum skimmer
Assignee: Link Belt Co
•
Filing: 1938-12-24
•
Granted: 1941-07-15
•
Expires: 1958-12-24
Abstract
No abstract record available.
Inventors
- 👤 William W Sayers
- 👤 Marcus B Tark
- 👤 Harold F Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:31
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; B01D21/00; B01D21/10; B01D21/12; B01D21/24; B01D21/2427; 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) | 1944-07-14 | 1945-01-13 | 1945-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-07-14 | 1949-01-13 | 1949-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-07-14 | 1953-01-13 | 1953-07-15 | $7700.00 | Window Closed / Lapsed |