US3233824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-stage seal assembly
Assignee: Ingersoll Rand Co
•
Filing: 1964-03-27
•
Granted: 1966-02-08
•
Expires: 1984-03-27
Abstract
No abstract record available.
Inventors
- 👤 Arthur S Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:35
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
36 words
IN A COMPRESSOR ACCORDING TO CLAIM 4, AND (A) AT LEAST ONE OF THE END WALLS BEING CONNECTED TO ONE OF THE CYLINDERS AND TO THE SPACING MEANS TO CONNECT THE SPACING MEANS TO THE CYLINDER.
References Cited (Backward Citations)
US2217686A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |