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US2841008A
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Surface smoothness measuring means
Assignee: Motors Liquidation Co
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Filing: 1951-09-15
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Granted: 1958-07-01
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Expires: 1971-09-15
Abstract
No abstract record available.
Inventors
- 👤 John H Brems
- 👤 Joseph B Bidwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:18
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1977433A
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US2320429A
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US2405133A
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US2460726A
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US2471009A
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US2565837A
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US2522567A
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US2548809A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |