Patent US3373401A successfully refreshed from Google Patents.
US2981818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Type metal transportation system
Assignee: ELECTRIC PIPE LINE Inc
•
Filing: 1958-12-17
•
Granted: 1961-04-25
•
Expires: 1978-12-17
Abstract
No abstract record available.
Inventors
- 👤 William J Trabilcy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:26
CPC Classifications
B; B41; B41B; B41B11/00; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6606
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US743331A
Cited
US1338408A
Cited
US1733250A
Cited
US1994838A
Cited
US1917205A
Cited
US2306831A
Cited
US2602916A
Cited
US2707313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |