US2189604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boring bar guiding mechanism
Assignee: VAN NORMAN MACHINE TOOL CO
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Filing: 1937-07-17
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Granted: 1940-02-06
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Expires: 1957-07-17
Abstract
No abstract record available.
Inventors
- 👤 Francis P Healy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:31
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/02; Y; Y10; Y10T; Y10T408/00; Y10T408/55; Y10T408/551; Y10T408/557; Y10T408/558; Y10T408/5583; Y10T408/5586; Y10T408/83; Y10T408/85; Y10T408/858; Y10T408/8583; Y10T408/8588; Y10T408/85892; Y10T408/85894
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) | 1943-02-05 | 1943-08-07 | 1944-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-02-05 | 1947-08-07 | 1948-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-02-05 | 1951-08-07 | 1952-02-06 | $7700.00 | Window Closed / Lapsed |