US2931313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Joy Manufacturing Co
•
Filing: 1955-06-24
•
Granted: 1960-04-05
•
Expires: 1975-06-24
Abstract
No abstract record available.
Inventors
- 👤 Robert W Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:25
CPC Classifications
F; F04; F04B; F04B15/00; F04B15/06; F04B15/08; F04B53/00; F04B53/10; F04B53/12; F04B53/125; F04B53/127; F04B53/128; Y; Y10; Y10S; Y10S417/00; Y10S417/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1402222A
Cited
US1825843A
Cited
US2249359A
Cited
US2344005A
Cited
US2390832A
Cited
US2396878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |