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US2569489A
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Discharging fluid pressure media
Assignee: Specialties Development Corp
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Filing: 1946-07-09
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Granted: 1951-10-02
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Expires: 1966-07-09
Abstract
No abstract record available.
Inventors
- 👤 Marcel K Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:11
CPC Classifications
A; A62; A62C; A62C99/00; A62C99/0009; A62C99/0018; A62C99/0027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1644338A
Cited
GB343926A
Cited
US2031965A
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US2062713A
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US2117684A
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US2206541A
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US2238686A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |