US3034689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discharge valve for granular material
Assignee: Individual
•
Filing: 1958-10-14
•
Granted: 1962-05-15
•
Expires: 1978-10-14
Abstract
No abstract record available.
Inventors
- 👤 Lincoln D Stoughton
- 👤 Samuel T Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:53
CPC Classifications
G; G21; G21C; G21C19/00; G21C19/20; G21C19/202; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1111230A
Cited
US1147325A
Cited
US1144259A
Cited
US1224822A
Cited
US2381319A
Cited
US2809931A
Cited
US2812303A
Cited
US2811285A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |