US2895772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packing ring
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1955-03-31
•
Granted: 1959-07-21
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Expires: 1975-03-31
Abstract
No abstract record available.
Inventors
- 👤 Walter R Chapman
- 👤 Talas Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:31
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; Y; Y10; Y10S; Y10S277/00; Y10S277/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1215445A
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US1273737A
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GB224101A
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US2456356A
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US2658809A
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US2615763A
Cited
US2705177A
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US2728620A
Cited
US2708573A
Cited
US2747954A
Cited
USRE24440E
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |