US3357740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental chair
Assignee: Ritter Corp
•
Filing: 1965-10-24
•
Granted: 1967-12-12
•
Expires: 1985-10-24
Abstract
No abstract record available.
Inventors
- 👤 Charles E Vaughn
- 👤 Billin Arthur Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:05
CPC Classifications
A; A61; A61G; A61G15/00; A47; A47C; A47C1/00; A47C1/04; A47C1/06; A47C1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2286372A
Cited
US2271007A
Cited
GB590836A
Cited
US2661227A
Cited
US2713891A
Cited
US3172699A
Cited
US3259355A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |