US3032360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Couplings for drill rods
Assignee: Individual
•
Filing: 1959-05-14
•
Granted: 1962-05-01
•
Expires: 1979-05-14
Abstract
No abstract record available.
Inventors
- 👤 Robert T Woodings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:12
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/046; F; F16; F16B; F16B2200/00; F16B2200/50; F16B2200/509; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17393; Y10T403/00; Y10T403/57; Y10T403/5793
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US85465A
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US519454A
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US904210A
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US1667485A
Cited
US2067271A
Cited
US2133050A
Cited
US2249162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-30 | 1965-10-30 | 1966-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-30 | 1969-10-30 | 1970-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-30 | 1973-10-30 | 1974-05-01 | $7700.00 | Window Closed / Lapsed |