US2564172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grease trap
Assignee: Individual
•
Filing: 1949-02-05
•
Granted: 1951-08-14
•
Expires: 1969-02-05
Abstract
No abstract record available.
Inventors
- 👤 Alfred V Raaberg
- 👤 Jack W Crays
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:00
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208; Y; Y10; Y10T; Y10T137/00; Y10T137/4456; Y10T137/4463; Y10T137/4553; Y10T137/8593; Y10T137/86348; Y10T137/86372
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |