US3068015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal for rotating cylinders such as kilns and the like
Assignee: Allis Chalmers Corp
•
Filing: 1961-04-21
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Granted: 1962-12-11
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Expires: 1981-04-21
Abstract
No abstract record available.
Inventors
- 👤 Alexander J Roubal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:20
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/54; F27; F27B; F27B7/00; F27B7/20; F27B7/22; F27B7/24; Y; Y10; Y10S; Y10S277/00; Y10S277/903; Y10S277/93
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |