Patent US3476144A successfully refreshed from Google Patents.
US3476144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Saliva ejector shut-off device for dental units
Assignee: COASTAL DYNAMICS INCORPORATED A CORP OF OREG
•
Filing: 1968-02-02
•
Granted: 1969-11-04
•
Expires: 1988-02-02
Abstract
No abstract record available.
Inventors
- 👤 John D Krantz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:17
CPC Classifications
A; A61; A61C; A61C17/00; A61C17/06; A61C17/12; A61C17/13
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US602572A
Cited
US1423418A
Cited
US1960335A
Cited
US2357657A
Cited
US2711586A
Cited
US3012322A
Cited
CH329143A
Cited
GB841895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |