Patent US2824470A successfully refreshed from Google Patents.
US2824470A
Expired / Lapsed
US
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Boring machine
Assignee: Individual
•
Filing: 1954-02-01
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Granted: 1958-02-25
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Expires: 1974-02-01
Abstract
No abstract record available.
Inventors
- 👤 E L Monroe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:03
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/56; B23Q1/58; B23Q1/50; B23Q1/54; B23Q1/5468; B23Q1/5481; Y; Y10; Y10T; Y10T408/00; Y10T408/55; Y10T408/563
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) | 1961-02-24 | 1961-08-26 | 1962-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-24 | 1965-08-26 | 1966-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-24 | 1969-08-26 | 1970-02-25 | $7700.00 | Window Closed / Lapsed |