Patent US2030066A successfully refreshed from Google Patents.
US2630131A
Expired / Lapsed
US
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Valved drum cap and spigot assembly
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1949-03-11
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Granted: 1953-03-03
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Expires: 1969-03-11
Abstract
No abstract record available.
Inventors
- 👤 Snyder Jacob Rush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:44
CPC Classifications
F; F16; F16K; F16K51/00; F16L; F16L29/00; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/612; Y10T137/613; Y10T137/6137; Y10T137/7069; Y10T137/71; Y10T137/8593; Y10T137/87917; Y10T137/87925; Y10T137/8807; Y10T137/88078
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US807981A
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US889952A
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US1522369A
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US1873304A
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US2096288A
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US2283970A
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US2301654A
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US2356326A
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US2310599A
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US2382291A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-02 | 1956-09-01 | 1957-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-02 | 1960-09-01 | 1961-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-02 | 1964-09-01 | 1965-03-03 | $7700.00 | Window Closed / Lapsed |