US2589181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe laying apparatus
Assignee: Individual
•
Filing: 1947-03-03
•
Granted: 1952-03-11
•
Expires: 1967-03-03
Abstract
No abstract record available.
Inventors
- 👤 Nolen A Yount
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:19
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/14; E21B19/15; E21B19/155
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1641998A
Cited
US1829879A
Cited
US2201813A
Cited
US2220550A
Cited
US2335719A
Cited
US2347639A
Cited
US2397192A
Cited
US2448324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-11 | 1955-09-10 | 1956-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-11 | 1959-09-10 | 1960-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-11 | 1963-09-10 | 1964-03-11 | $7700.00 | Window Closed / Lapsed |