US2675333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe apparatus
Assignee: American Pipe and Construction Co
•
Filing: 1949-12-17
•
Granted: 1954-04-13
•
Expires: 1969-12-17
Abstract
No abstract record available.
Inventors
- 👤 Ralph J Trout
- 👤 Charles H Brannen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:13
CPC Classifications
B; B28; B28B; B28B19/00; B28B19/0023; B28B21/00; B28B21/02; B28B21/10; B28B21/22; B28B21/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1768451A
Cited
US652732A
Cited
AU2182429A
Cited
US1832324A
Cited
US2484018A
Cited
US2528643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |