Patent US1091789A successfully refreshed from Google Patents.
US1091789A
Expired / Lapsed
US
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Dental instrument.
Assignee: Individual
•
Filing: 1913-03-29
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Granted: 1914-03-31
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Expires: 1933-03-29
Abstract
No abstract record available.
Inventors
- 👤 Birger T Andren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:44
CPC Classifications
A; A61; A61C; A61C15/00; A61C15/04; A61C15/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1917-03-30 | 1917-09-29 | 1918-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1921-03-30 | 1921-09-29 | 1922-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1925-03-30 | 1925-09-29 | 1926-03-31 | $7700.00 | Window Closed / Lapsed |