US1928458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ring fracturing machine
Assignee: Individual
•
Filing: 1930-01-02
•
Granted: 1933-09-26
•
Expires: 1950-01-02
Abstract
No abstract record available.
Inventors
- 👤 Mitchell Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:36
CPC Classifications
B; B23; B23D; B23D31/00; B23D31/008; Y; Y10; Y10T; Y10T225/00; Y10T225/10; Y10T225/30; Y10T225/329; Y10T225/371; Y10T225/379; Y10T225/386; Y10T83/00; Y10T83/04; Y10T83/0405; Y10T83/0419; Y10T83/0433; Y10T83/869; Y10T83/8776
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) | 1936-09-25 | 1937-03-27 | 1937-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-09-25 | 1941-03-27 | 1941-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-09-25 | 1945-03-27 | 1945-09-26 | $7700.00 | Window Closed / Lapsed |