US3464837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental materials
Assignee: National Research Development Corp UK
•
Filing: 1964-10-01
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Granted: 1969-09-02
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Expires: 1984-10-01
Abstract
No abstract record available.
Inventors
- 👤 John Walford Mclean
- 👤 Thomas Henry Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:09
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/1315; A; A61; A61C; A61C13/00; A61C13/08; A61K; A61K6/00; A61K6/15; A61K6/17; A61K6/70; A61K6/71; A61K6/77; A61K6/80; A61K6/802; A61K6/816
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |