US2660367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressor sealing arrangement
Assignee: Allis Chalmers Corp
•
Filing: 1951-10-31
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Granted: 1953-11-24
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Expires: 1971-10-31
Abstract
No abstract record available.
Inventors
- 👤 Arnold H Ehlinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:30
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/06; F04D29/063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2000265A
Cited
US2064703A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |