US3664754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand drill alignment devices and methods of making and using the same
Assignee: GIARD ROBERT L
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Filing: 1969-11-03
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Granted: 1972-05-23
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Expires: 1989-11-03
Abstract
Abstract THE PRESENT INVENTION RELATES TO BUBBLE TYPE ALIGNMENT DEVICES FOR USE IN UPON AND WITH HAND DRILLS COMPRISING BUBBLE TYPE LEVEL CHAMBERS APPROPRIATELY SHAPED AND OPERABLY MOUNTED TO A CONVENTIONAL HAND DRILL ALLOWING A FIRST SUCH LEVEL WHICH IS ALIGNED PARALLEL TO THE DRILL BIT AND A SECOND SUCH LEVEL WHICH IS ALIGNATED PERPENDICULAR TO THE FIRST.
Inventors
- 👤 Donald Kelbel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:15
CPC Classifications
B; B25; B25H; B25H1/00; B25H1/0021; B25H1/0078; B25H1/0085; G; G01; G01C; G01C9/00; G01C9/18; G01C9/24; Y; Y10; Y10T; Y10T408/00; Y10T408/21; Y10T408/91; Y10T408/96
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) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |