US2424455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joint
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1944-10-16
•
Granted: 1947-07-22
•
Expires: 1964-10-16
Abstract
No abstract record available.
Inventors
- 👤 Matthew P Graham
- 👤 James H Booth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:13
CPC Classifications
F; F16; F16C; F16C11/00; F16C11/04; F16C11/06; F16C11/0619; F16C11/0623; F16C11/0652; F16C11/0628; F16C11/0685; B; B60; B60G; B60G2204/00; B60G2204/40; B60G2204/416; F16C2300/00; F16C2300/02; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32631; Y10T403/32713
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US941605A
Cited
US1824271A
Cited
US1989116A
Cited
US1814999A
Cited
US1909100A
Cited
US2128087A
Cited
US2325845A
Cited
US2361025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-21 | 1951-01-20 | 1951-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-21 | 1955-01-20 | 1955-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-21 | 1959-01-20 | 1959-07-22 | $7700.00 | Window Closed / Lapsed |