Patent US2797482A successfully refreshed from Google Patents.
US2797482A
Expired / Lapsed
US
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Dental appliance
Assignee: Austenal Inc
•
Filing: 1953-09-15
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Granted: 1957-07-02
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Expires: 1973-09-15
Abstract
No abstract record available.
Inventors
- 👤 Eric H Zahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:11
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/225; A61C13/267
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2023645A
Cited
US2196505A
Cited
US2227735A
Cited
GB543577A
Cited
US2544671A
Cited
US2550436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |