Patent US1994653A successfully refreshed from Google Patents.
US3393673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oral hygiene apparatus
Assignee: Aqua Tec Corp
•
Filing: 1964-11-23
•
Granted: 1968-07-23
•
Expires: 1984-11-23
Abstract
Abstract 1,133,736. Reciprocating pumps. AQUA TEC CORP. Nov. 22, 1965 [Nov. 23, 1964], No. 1516/68. Divided out of 1,133, 735. Heading F1A. The subject-matter of the present application is the same as that of the parent Specification 1,133, 735, but the claims relate to the internal structure of the pump, including the inlet valve.
Inventors
- 👤 John W Mattingly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:43
CPC Classifications
A; A61; A61H; A61H13/00; A61H13/005; A61C; A61C1/00; A61C1/0061; A61C1/0084; A61C1/0092; F; F04; F04B; F04B23/00; F04B53/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |