Patent US2994129A successfully refreshed from Google Patents.
US2994129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed dental handpiece
Assignee: Individual
•
Filing: 1956-05-08
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Granted: 1961-08-01
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Expires: 1976-05-08
Abstract
No abstract record available.
Inventors
- 👤 Paul H Tanner
- 👤 Oscar P Nagel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:59
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/08; A61C1/14; A61C1/02; A61C1/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2157115A
Cited
US1815611A
Cited
US2180993A
Cited
US2283314A
Cited
FR914416A
Cited
AT163217B
Cited
US2664632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |