US2786252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming dense coating on pipe
Assignee: American Pipe and Construction Co
•
Filing: 1951-07-27
•
Granted: 1957-03-26
•
Expires: 1971-07-27
Abstract
No abstract record available.
Inventors
- 👤 John R Curran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:33
CPC Classifications
B; B28; B28B; B28B21/00; B28B21/02; B28B21/06; Y; Y10; Y10S; Y10S425/00; Y10S425/044
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US305303A
Cited
US1103270A
Cited
US1589011A
Cited
US1904094A
Cited
US1941812A
Cited
US2053307A
Cited
US2091385A
Cited
US2187260A
Cited
US2225015A
Cited
US2204020A
Cited
US2296018A
Cited
US2306510A
Cited
US2602980A
Cited
US2605533A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-25 | 1960-09-24 | 1961-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-25 | 1964-09-24 | 1965-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-25 | 1968-09-24 | 1969-03-26 | $7700.00 | Window Closed / Lapsed |