US3531089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rope block assembly
Assignee: Ingersoll Rand Co
•
Filing: 1969-11-07
•
Granted: 1970-09-29
•
Expires: 1989-11-07
Abstract
No abstract record available.
Inventors
- 👤 Harold S Harding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:37
CPC Classifications
B; B66; B66D; B66D3/00; B66D3/04; F; F16; F16G; F16G11/00; F16G11/04; F16G11/044; F16G11/046; F16G11/048; B66D2700/00; B66D2700/02; B66D2700/026; B66D2700/028; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49988
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
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 |