US2630338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valved ring and spigot assembly
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1948-08-28
•
Granted: 1953-03-03
•
Expires: 1968-08-28
Abstract
No abstract record available.
Inventors
- 👤 Snyder Jacob Rush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:09
CPC Classifications
B; B67; B67D; B67D3/00; B67D3/04; B67D3/043; Y; Y10; Y10T; Y10T137/00; Y10T137/5109
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US635693A
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US889952A
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GB191412164A
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US1573862A
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US1538007A
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US1873304A
Cited
US2283970A
Cited
US2320719A
Cited
GB543733A
Cited
GB564926A
Cited
US2453391A
Cited
US2486270A
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 |