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US3362447A
Expired / Lapsed
US
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Dowel hole drilling device
Assignee: WALTER ELDER JR
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Filing: 1965-04-22
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Granted: 1968-01-09
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Expires: 1985-04-22
Abstract
No abstract record available.
Inventors
- 👤 Jr Walter Elder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:26
CPC Classifications
B; B27; B27C; B27C3/00; B27C3/06; B23; B23Q; B23Q9/00; B23Q9/0014; B25; B25H; B25H1/00; B25H1/0021; B25H1/0057; B25H1/0064; Y; Y10; Y10T; Y10T408/00; Y10T408/55; Y10T408/563; Y10T408/5638; Y10T408/564; Y10T408/5653
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) | 1971-01-08 | 1971-07-10 | 1972-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-08 | 1975-07-10 | 1976-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-08 | 1979-07-10 | 1980-01-09 | $7700.00 | Window Closed / Lapsed |