US3531144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retainer ring
Assignee: Ingersoll Rand Co
•
Filing: 1969-02-27
•
Granted: 1970-09-29
•
Expires: 1989-02-27
Abstract
No abstract record available.
Inventors
- 👤 Paul K Bizilia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:50
CPC Classifications
B; B25; B25B; B25B23/00; B25B23/0007; B25B23/0035; F; F16; F16D; F16D1/00; F16D1/10; F16D1/108; F16D1/116; Y; Y10; Y10T; Y10T403/00; Y10T403/60; Y10T403/70; Y10T403/7026; Y10T403/7033; Y10T403/7075; Y10T403/7077
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1803136A
Cited
US2584873A
Cited
US2636362A
Cited
US2744777A
Cited
US2704681A
Cited
US2886355A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |