US2984507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baffle to protect axial contact seal
Assignee: Allis Chalmers Corp
•
Filing: 1957-08-22
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Granted: 1961-05-16
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Expires: 1977-08-22
Abstract
No abstract record available.
Inventors
- 👤 Harry J Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:33
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1315822A
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US1927543A
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US2370964A
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US2653837A
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US2672357A
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US2592728A
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FR1147047A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |