Patent US3489321A successfully refreshed from Google Patents.
US3489321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feeding mechanism for seed
Assignee: Kirschmann Manufacturing & Distributing
•
Filing: 1966-03-30
•
Granted: 1970-01-13
•
Expires: 1986-03-30
Abstract
No abstract record available.
Inventors
- 👤 John D Kirschmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:17
CPC Classifications
A; A01; A01C; A01C7/00; A01C7/08; A01C7/12; A01C7/121; A01C7/06; A01C7/123; A01C7/125
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1322705A
Cited
US416385A
Cited
US454216A
Cited
US484630A
Cited
US488239A
Cited
US237001A
Cited
US936883A
Cited
US1097426A
Cited
US2432437A
Cited
US2593516A
Cited
US2569421A
Cited
US3120965A
Cited
US3373705A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |