Patent US3455188A successfully refreshed from Google Patents.
US3455188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable boring cutter
Assignee: CHARLES J HOFFMAN
•
Filing: 1967-09-11
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Granted: 1969-07-15
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Expires: 1987-09-11
Abstract
No abstract record available.
Inventors
- 👤 Donald W Pratt
- 👤 Charles J Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:19
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/03; B23B29/034; B23B29/03403; B23B29/03407; Y; Y10; Y10T; Y10T408/00; Y10T408/83; Y10T408/85; Y10T408/858
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1853971A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-14 | 1973-01-13 | 1973-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-14 | 1977-01-13 | 1977-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-14 | 1981-01-13 | 1981-07-15 | $7700.00 | Window Closed / Lapsed |