US2474374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic hayfork
Assignee: Individual
•
Filing: 1948-03-19
•
Granted: 1949-06-28
•
Expires: 1968-03-19
Abstract
No abstract record available.
Inventors
- 👤 De Witt C Shattuck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:48
CPC Classifications
A; A01; A01D; A01D87/00; A01D87/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US321158A
Cited
US477621A
Cited
US912611A
Cited
US1356515A
Cited
US1522423A
Cited
US1630456A
Cited
US2375205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-27 | 1952-12-27 | 1953-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-27 | 1956-12-27 | 1957-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-27 | 1960-12-27 | 1961-06-28 | $7700.00 | Window Closed / Lapsed |