US2539057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool joint
Assignee: Chicago Pneumatic Tool Co LLC
•
Filing: 1944-09-02
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Granted: 1951-01-23
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Expires: 1964-09-02
Abstract
No abstract record available.
Inventors
- 👤 Robinson W Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:39
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/004; E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/042; Y; Y10; Y10S; Y10S29/00; Y10S29/035; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49865
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-22 | 1954-07-24 | 1955-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-22 | 1958-07-24 | 1959-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-22 | 1962-07-24 | 1963-01-23 | $7700.00 | Window Closed / Lapsed |