US3525112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary root cutting head
Assignee: FE Myers and Bro Co
•
Filing: 1968-08-29
•
Granted: 1970-08-25
•
Expires: 1988-08-29
Abstract
No abstract record available.
Inventors
- 👤 Philip C Masters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:17
CPC Classifications
E; E03; E03F; E03F9/00; E03F9/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1036735A
Cited
US1549761A
Cited
US2062850A
Cited
US2218130A
Cited
US2692752A
Cited
US3432872A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |