US2744309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making ball studs
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1950-12-20
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Granted: 1956-05-08
•
Expires: 1970-12-20
Abstract
No abstract record available.
Inventors
- 👤 Matthew P Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:20
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/56; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49679; Y10T29/49694
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US986697A
Cited
US1096555A
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US1701736A
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US1784866A
Cited
US2005547A
Cited
US2106567A
Cited
US2141753A
Cited
US2265839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |