Patent US4234926A successfully refreshed from Google Patents.
Patent US1863874A successfully refreshed from Google Patents.
US1863874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubular control
Assignee: Bundy Tubing Co
•
Filing: 1930-02-15
•
Granted: 1932-06-21
•
Expires: 1950-02-15
Abstract
No abstract record available.
Inventors
- 👤 Bert L Quarnstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:42
CPC Classifications
B; B62; B62D; B62D1/00; B62D1/02; B62D1/16; F; F16; F16L; F16L2101/00; F16L2101/30; Y; Y10; Y10S; Y10S138/00; Y10S138/11; Y10T; Y10T74/00; Y10T74/20; Y10T74/20207; Y10T74/20299
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) | 1935-06-21 | 1935-12-21 | 1936-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-06-21 | 1939-12-21 | 1940-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-06-21 | 1943-12-21 | 1944-06-21 | $7700.00 | Window Closed / Lapsed |