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US2605994A
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Seal assembly
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1945-10-31
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Granted: 1952-08-05
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Expires: 1965-10-31
Abstract
No abstract record available.
Inventors
- 👤 Borchardt William Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:11
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/04; F16K5/0457; F16K5/0464
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB499150A
Cited
US2294105A
Cited
US2383983A
Cited
US2392198A
Cited
US2404816A
Cited
US2522231A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-05 | 1956-02-04 | 1956-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-05 | 1960-02-04 | 1960-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-05 | 1964-02-04 | 1964-08-05 | $7700.00 | Window Closed / Lapsed |