US2916867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floating knife unit for rotary cutting machines
Assignee: Individual
•
Filing: 1957-10-25
•
Granted: 1959-12-15
•
Expires: 1977-10-25
Abstract
No abstract record available.
Inventors
- 👤 David H Chadwick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:16
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/73; A01D34/733
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1356619A
Cited
US1849963A
Cited
US2272436A
Cited
US2547540A
Cited
US2615765A
Cited
US2669084A
Cited
US2822657A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |