Patent US2858109A successfully refreshed from Google Patents.
US2858109A
Expired / Lapsed
US
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Masonry drill and starter
Assignee: NEW ENGLAND CARBIDE TOOL COMPA
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Filing: 1957-04-08
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Granted: 1958-10-28
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Expires: 1977-04-08
Abstract
No abstract record available.
Inventors
- 👤 Evert R Tengberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:13
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/04; B23B51/0426; B23B2226/00; B23B2226/75; Y; Y10; Y10T; Y10T408/00; Y10T408/89; Y10T408/905
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) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |