US2657506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipeline cleaning and polishing device
Assignee: Sunoco Inc
•
Filing: 1952-01-15
•
Granted: 1953-11-03
•
Expires: 1972-01-15
Abstract
No abstract record available.
Inventors
- 👤 Raymond F Hadley
- 👤 James G Daugherty
- 👤 Frank A Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:14
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/053; B08B9/055; B08B9/0553; B24; B24B; B24B33/00; B24B33/08; B24B33/084; B24B5/00; B24B5/36; B24B5/40
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US38153A
Cited
US624307A
Cited
US971042A
Cited
US934491A
Cited
US1180230A
Cited
US1898786A
Cited
US1908339A
Cited
US1966819A
Cited
US2028779A
Cited
US2118720A
Cited
US2328093A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |