US2697846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor attachment for materials handling machines
Assignee: Individual
•
Filing: 1952-04-15
•
Granted: 1954-12-28
•
Expires: 1972-04-15
Abstract
No abstract record available.
Inventors
- 👤 Francis P Wilcox
- 👤 Harvey A Fitts
- 👤 Hazen D Boyce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:56
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/64; E02F3/65; E02F3/654; E02F3/655; E01; E01H; E01H1/00; E01H1/02; E01H1/04; E01H1/045; E02F3/6454; E02F3/6463; Y; Y10; Y10S; Y10S414/00; Y10S414/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US793700A
Cited
US1232294A
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US1238385A
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US2109393A
Cited
US2597692A
Cited
US2501243A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-27 | 1958-06-28 | 1958-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-27 | 1962-06-28 | 1962-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-27 | 1966-06-28 | 1966-12-28 | $7700.00 | Window Closed / Lapsed |