Patent US3303728A successfully refreshed from Google Patents.
US3303728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple bit boring bar
Assignee: TESAN TOOL Manufacturing CO
•
Filing: 1965-04-27
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Granted: 1967-02-14
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Expires: 1985-04-27
Abstract
No abstract record available.
Inventors
- 👤 Ernest J Testa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:57
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/03; B23B29/02; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1906; Y10T407/1926; Y10T407/1934; Y10T407/1938; Y10T407/22; Y10T407/2272; Y10T407/2282; Y10T407/2284; Y10T408/00; Y10T408/86; Y10T408/885
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US846196A
Cited
US1049589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |