US2867145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method of making a spirally grooved ball type bearing member
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1953-05-29
•
Granted: 1959-01-06
•
Expires: 1973-05-29
Abstract
No abstract record available.
Inventors
- 👤 John A Markstrum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:40
CPC Classifications
B; B23; B23C; B23C3/00; B23C3/28; B23C3/32; Y; Y10; Y10S; Y10S82/00; Y10S82/902; Y10T; Y10T82/00; Y10T82/10; Y10T82/14; Y10T82/148
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US124272A
Cited
US1252129A
Cited
US1663192A
Cited
US1859006A
Cited
US1858754A
Cited
US1879196A
Cited
US1960460A
Cited
US2215257A
Cited
US2114627A
Cited
US2146774A
Cited
GB504654A
Cited
US2232304A
Cited
US2291530A
Cited
FR52221E
Cited
US2423941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |