US2569767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental material and method
Assignee: L D CAULK Co
•
Filing: 1946-05-27
•
Granted: 1951-10-02
•
Expires: 1966-05-27
Abstract
No abstract record available.
Inventors
- 👤 Frances E Knock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:25
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/0001; A61K; A61K6/00; A61K6/30; A61K6/80; A61K6/884; A61K6/887
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB498877A
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US2318845A
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GB564829A
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GB569684A
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US2335133A
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US2453665A
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US2398736A
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US2390437A
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US2377041A
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US2482825A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |