US3424065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing
Assignee: Ingersoll Rand Co
•
Filing: 1967-01-30
•
Granted: 1969-01-28
•
Expires: 1987-01-30
Abstract
No abstract record available.
Inventors
- 👤 Ewald H Kurt
- 👤 Edward F Wickens
- 👤 Samuel P Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:15
CPC Classifications
E; E21; E21B; E21B4/00; E21B4/06; E21B4/14; F; F16; F16C; F16C29/00; F16C29/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US160426A
Cited
GB189812514A
Cited
US1931026A
Cited
US1985781A
Cited
US2642318A
Cited
US2738240A
Cited
SU135773A1
Cited
US3198264A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |