US3516501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball and socket and depth control connection for cultivating implements
Assignee: RALPH W SWEET
•
Filing: 1967-05-04
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Granted: 1970-06-23
•
Expires: 1987-05-04
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Sweet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:33
CPC Classifications
A; A01; A01B; A01B21/00; A01B21/08; A01B59/00; A01B59/04; A01B59/042
Claims Analysis
Total Claims: 0
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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) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |