US2301783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated electrical conductor for pipes
Assignee: Individual
•
Filing: 1940-03-08
•
Granted: 1942-11-10
•
Expires: 1960-03-08
Abstract
No abstract record available.
Inventors
- 👤 Robert E Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:08
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/028; H; H01; H01R; H01R13/00; H01R13/46; H01R13/52; H01R13/523; H01R4/00; H01R4/58; H01R4/60; E21B17/0285
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-11-09 | 1946-05-11 | 1946-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-11-09 | 1950-05-11 | 1950-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-11-09 | 1954-05-11 | 1954-11-10 | $7700.00 | Window Closed / Lapsed |