US3440680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental care apparatus
Assignee: Individual
•
Filing: 1967-04-14
•
Granted: 1969-04-29
•
Expires: 1987-04-14
Abstract
No abstract record available.
Inventors
- 👤 Winfried Joseph Werding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:45
CPC Classifications
A; A46; A46B; A46B9/00; A46B9/02; A46B9/04; A46B9/045; A61; A61C; A61C17/00; A61C17/16; A61C17/22; A61C17/228; A61C17/24; A61C17/26; A61C17/28; A46B13/00; A46B13/02; A46B13/04; A46B13/06; A46B2200/00; A46B2200/10; A46B2200/1066; A61C17/02; A61C17/0211; A61C17/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2628377A
Cited
US3134127A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |