Patent US2742259A successfully refreshed from Google Patents.
US2742259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conduit tractor
Assignee: Individual
•
Filing: 1953-04-06
•
Granted: 1956-04-17
•
Expires: 1973-04-06
Abstract
No abstract record available.
Inventors
- 👤 Cormack E Boucher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:26
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/26; F16L55/28; F16L55/30; H; H02; H02G; H02G1/00; H02G1/06; H02G1/08; H02G1/088; F16L2101/00; F16L2101/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US443824A
Cited
US621018A
Cited
US632353A
Cited
US774525A
Cited
US1810143A
Cited
US2514694A
Cited
US2455273A
Cited
US2604521A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |