US2917820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for lining pipelines
Assignee: American Pipe and Construction Co
•
Filing: 1956-07-20
•
Granted: 1959-12-22
•
Expires: 1976-07-20
Abstract
No abstract record available.
Inventors
- 👤 Francis M Matheny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:25
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/18; B; B28; B28B; B28B19/00; B28B19/0023; F16L55/16; F16L55/162; F16L55/165; F16L55/1655; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49718; Y10T29/49732; Y10T29/49746; Y10T29/49826; Y10T29/49863; Y10T29/49874; Y10T29/49881
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US788968A
Cited
US2150875A
Cited
US2210353A
Cited
US2382171A
Cited
US2370780A
Cited
US2640524A
Cited
US2743514A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |