US3528202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eccentricity gage for machine tools
Assignee: Northrop Grumman Systems Corp
•
Filing: 1967-05-12
•
Granted: 1970-09-15
•
Expires: 1987-05-12
Abstract
No abstract record available.
Inventors
- 👤 William E Happel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:31
CPC Classifications
B; B24; B24B; B24B49/00; B24B49/02; B24B49/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1779807A
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US1927750A
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US1993854A
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US2023777A
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US2243410A
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US2639562A
Cited
US3097454A
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US3271910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |