Patent US3501095A successfully refreshed from Google Patents.
Patent US2497489A successfully refreshed from Google Patents.
US2497489A
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US
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Hydraulic strut
Assignee: RTX Corp
•
Filing: 1946-01-03
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Granted: 1950-02-14
•
Expires: 1966-01-03
Abstract
No abstract record available.
Inventors
- 👤 John W Coursen
- 👤 Edwin J Schweitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:03
CPC Classifications
B; B64; B64C; B64C25/00; B64C25/02; B64C25/08; B64C25/10; B64C25/18; B64C25/22; Y; Y10; Y10S; Y10S92/00; Y10S92/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
US767732A
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US787480A
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US834825A
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US1231257A
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US1187946A
Cited
US1635331A
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US2259576A
Cited
US2357986A
Cited
US2366121A
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US2464962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |