Patent US2829645A successfully refreshed from Google Patents.
US2829645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic dental syringe
Assignee: Individual
•
Filing: 1955-03-21
•
Granted: 1958-04-08
•
Expires: 1975-03-21
Abstract
No abstract record available.
Inventors
- 👤 Clarence D Matteson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:32
CPC Classifications
A; A61; A61H; A61H13/00; A61H13/005; A61C; A61C17/00; A61C17/02; A61C17/032; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87249
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) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |