US3440867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring the flexibility of thin material
Assignee: Lever Brothers Co
•
Filing: 1966-03-03
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Granted: 1969-04-29
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Expires: 1986-03-03
Abstract
No abstract record available.
Inventors
- 👤 John Karel Prall
- 👤 John David Fillmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:05
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/0048; A61B5/0051; A61B5/103; A61B5/11; A61B5/1107; A61B5/44; A61B5/441; A61B5/442; G; G01; G01N; G01N3/00; G01N3/32; G01N3/36; G01N2203/00; G01N2203/0014; G01N2203/0023; G01N2203/003; G01N2203/0042; G01N2203/0044; G01N2203/02; G01N2203/06; G01N2203/0617; G01N2203/0623
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2682167A
Cited
US2981096A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |