US2416402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boring machine
Assignee: Ammco Tools Inc
•
Filing: 1944-09-29
•
Granted: 1947-02-25
•
Expires: 1964-09-29
Abstract
No abstract record available.
Inventors
- 👤 Wallace F Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:21
CPC Classifications
B; B23; B23Q; B23Q9/00; B23Q2709/00; Y; Y10; Y10T; Y10T408/00; Y10T408/39; Y10T408/55; Y10T408/561; Y10T408/5612
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1417278A
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US1651286A
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US1967387A
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US2015940A
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US2053644A
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US2349526A
Cited
US2252121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-24 | 1950-08-26 | 1951-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-24 | 1954-08-26 | 1955-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-24 | 1958-08-26 | 1959-02-25 | $7700.00 | Window Closed / Lapsed |