US2415203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental engine attachment
Assignee: BERTHA FREEDMAN
•
Filing: 1943-06-07
•
Granted: 1947-02-04
•
Expires: 1963-06-07
Abstract
No abstract record available.
Inventors
- 👤 Freedman Hyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:28
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US148920A
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US1037134A
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US1038752A
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US1340908A
Cited
US1198227A
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US2188034A
Cited
US2288688A
Cited
US2286740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-03 | 1950-08-05 | 1951-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-03 | 1954-08-05 | 1955-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-03 | 1958-08-05 | 1959-02-04 | $7700.00 | Window Closed / Lapsed |