Patent US2723599A successfully refreshed from Google Patents.
US2723599A
Expired / Lapsed
US
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Means for preventing leakage of fluid pressure from tanks through openings having movable parts mounted therein
Assignee: Forming Machine Co of America Inc
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Filing: 1951-03-28
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Granted: 1955-11-15
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Expires: 1971-03-28
Abstract
No abstract record available.
Inventors
- 👤 Alvan D Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:06
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/52; B28B1/527; D; D21; D21F; D21F9/00; D21F9/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US511606A
Cited
US587918A
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USRE21201E
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US1166882A
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US1619371A
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US1771355A
Cited
US1870971A
Cited
GB408527A
Cited
US2356007A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |