US2621950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swivel joint
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1947-10-24
•
Granted: 1952-12-16
•
Expires: 1967-10-24
Abstract
No abstract record available.
Inventors
- 👤 Ricks Bernard Elijah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:46
CPC Classifications
B; B62; B62D; B62D7/00; B62D7/16; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32951
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US537491A
Cited
US148369A
Cited
US1055398A
Cited
US1247094A
Cited
US1451040A
Cited
US1393817A
Cited
US1856325A
Cited
US1838799A
Cited
US1910926A
Cited
US1985781A
Cited
US2071341A
Cited
US2099209A
Cited
US2517231A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |