USRE20579E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand operated
Assignee: —
•
Filing: —
•
Granted: 1937-12-14
•
Expires: 1954-12-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:36
CPC Classifications
B; B23; B23G; B23G1/00; B23G1/16; Y; Y10; Y10T; Y10T408/00; Y10T408/16; Y10T408/165; Y10T408/65; Y10T408/675; Y10T408/6771; Y10T408/6776
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-12-13 | 1941-06-14 | 1941-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-12-13 | 1945-06-14 | 1945-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-12-13 | 1949-06-14 | 1949-12-14 | $7700.00 | Window Closed / Lapsed |