Patent US2471060A successfully refreshed from Google Patents.
US2471060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible sewer rod coupling feeler
Assignee: FLEXIBLE SEWER ROD EQUIPMENT C
•
Filing: 1947-07-14
•
Granted: 1949-05-24
•
Expires: 1967-07-14
Abstract
No abstract record available.
Inventors
- 👤 Robert E Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:17
CPC Classifications
E; E03; E03F; E03F9/00; E03F9/002; Y; Y10; Y10T; Y10T403/00; Y10T403/16; Y10T403/1616
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1952-05-23 | 1952-11-22 | 1953-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-23 | 1956-11-22 | 1957-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-23 | 1960-11-22 | 1961-05-24 | $7700.00 | Window Closed / Lapsed |