US3387489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Breakage detector for screening apparatus
Assignee: Canadian Ingersoll Rand Co Ltd
•
Filing: 1965-07-19
•
Granted: 1968-06-11
•
Expires: 1985-07-19
Abstract
No abstract record available.
Inventors
- 👤 Douglas L G Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:48
CPC Classifications
F; F16; F16L; F16L55/00; D; D21; D21D; D21D5/00; D21D5/02; D21D5/023; D21D5/026; D21G; D21G9/00; D21G9/0009; F16L55/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2172399A
Cited
US3276248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |