US3435841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental aspirator
Assignee: OMARK AIR CONTROLS Inc
•
Filing: 1966-02-21
•
Granted: 1969-04-01
•
Expires: 1986-02-21
Abstract
No abstract record available.
Inventors
- 👤 Norman C Williams
- 👤 Dwight A Booth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:12
CPC Classifications
A; A61; A61C; A61C17/00; A61C17/06; A61C17/12; A61C17/135; A61C17/14; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/265; Y10T137/2652; Y10T137/2931; Y10T137/3003; Y10T137/3084; Y10T137/309; Y10T137/3099; Y10T137/3109
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1245612A
Cited
US2547823A
Cited
US2661886A
Cited
US2863525A
Cited
US2873180A
Cited
US2913120A
Cited
US3061179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |