US2835127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hardness tester
Assignee: Individual
•
Filing: 1954-03-03
•
Granted: 1958-05-20
•
Expires: 1974-03-03
Abstract
No abstract record available.
Inventors
- 👤 Robert C Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:18
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/40; G01N3/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1770046A
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US2258424A
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US2466567A
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US2544205A
Cited
US2631272A
Cited
US2677271A
Cited
GB704290A
Cited
DE845425C
Cited
US2671203A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |