US3384344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas bearing device for dental handpieces
Assignee: Individual
•
Filing: 1967-05-05
•
Granted: 1968-05-21
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Expires: 1987-05-05
Abstract
No abstract record available.
Inventors
- 👤 Ota Sadayasu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:02
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/08; A61C1/18; A61C1/181; A61C1/0007; A61C1/02; A61C1/05; F; F16; F16C; F16C2316/00; F16C2316/10; F16C2316/13; F16C32/00; F16C32/06; F16C32/0603; F16C32/0614; Y; Y10; Y10S; Y10S415/00; Y10S415/904
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) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |