Patent US2936715A successfully refreshed from Google Patents.
US2936715A
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US
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Seal assembly
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1955-11-14
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Granted: 1960-05-17
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Expires: 1975-11-14
Abstract
No abstract record available.
Inventors
- 👤 Donald L Southam
- 👤 Frank C Bayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:28
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/14; F04D29/146; F16; F16J; F16J15/00; F16J15/16; F16J15/164
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
AT35965B
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GB100858A
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FR610942A
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FR33161E
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GB325930A
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GB380886A
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CH194535A
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DE703866C
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US2258527A
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US2418707A
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US2478649A
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US2571802A
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US2684034A
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DE876642C
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |