Patent US2334875A successfully refreshed from Google Patents.
US2334875A
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Multiple detachable coupling
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1941-09-29
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Granted: 1943-11-23
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Expires: 1961-09-29
Abstract
No abstract record available.
Inventors
- 👤 George H Hufferd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:20
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/28; F16L37/30; F16L37/373; F16L37/56; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87153; Y10T137/87161; Y10T137/87917; Y10T137/87925; Y10T137/87933
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-11-22 | 1947-05-24 | 1947-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-11-22 | 1951-05-24 | 1951-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-11-22 | 1955-05-24 | 1955-11-23 | $7700.00 | Window Closed / Lapsed |