US2493631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pick shaft assembly
Assignee: MW Kellogg Co
•
Filing: 1948-05-04
•
Granted: 1950-01-03
•
Expires: 1968-05-04
Abstract
No abstract record available.
Inventors
- 👤 Lake Francis Gerard
- 👤 Everett H Ashton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:57
CPC Classifications
D; D03; D03D; D03D49/00; D03D49/24; D03D49/26; D03D49/38; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20882
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-02 | 1953-07-04 | 1954-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-02 | 1957-07-04 | 1958-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-02 | 1961-07-04 | 1962-01-03 | $7700.00 | Window Closed / Lapsed |