US2904294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clamp device
Assignee: Northrop Grumman Corp
•
Filing: 1957-02-11
•
Granted: 1959-09-15
•
Expires: 1977-02-11
Abstract
No abstract record available.
Inventors
- 👤 George E Marygold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:02
CPC Classifications
F; F16; F16L; F16L3/00; F16L3/22; F16L3/23; F16L3/233; F16L3/08; F16L3/12; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1498
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US593978A
Cited
US622739A
Cited
US1085421A
Cited
US2004695A
Cited
US2292140A
Cited
US2580231A
Cited
DE839585C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |