US1372238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool-joint
Assignee: Individual
•
Filing: 1920-02-14
•
Granted: 1921-03-22
•
Expires: 1940-02-14
Abstract
No abstract record available.
Inventors
- 👤 Richard F Kreiter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:06
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/042; E21B17/043; F; F16; F16L; F16L37/00; F16L37/24; F16L37/244; F16L37/2445; F16B; F16B2200/00; F16B2200/69; F16B2200/73; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17931; Y10T403/00; Y10T403/36; Y10T403/364; Y10T403/368; Y10T403/57; Y10T403/5706; Y10T403/5733
Claims Analysis
Total Claims: 0
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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) | 1924-03-21 | 1924-09-20 | 1925-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-03-21 | 1928-09-20 | 1929-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-03-21 | 1932-09-20 | 1933-03-22 | $7700.00 | Window Closed / Lapsed |