US1851843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rod coupler
Assignee: Individual
•
Filing: 1928-12-04
•
Granted: 1932-03-29
•
Expires: 1948-12-04
Abstract
No abstract record available.
Inventors
- 👤 Dee F Inman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:55
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/046; Y; Y10; Y10S; Y10S403/00; Y10S403/04; Y10T; Y10T279/00; Y10T279/17; Y10T279/17761; Y10T279/17769; Y10T279/17786; Y10T403/00; Y10T403/60; Y10T403/602
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) | 1935-03-29 | 1935-09-28 | 1936-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-03-29 | 1939-09-28 | 1940-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-03-29 | 1943-09-28 | 1944-03-29 | $7700.00 | Window Closed / Lapsed |