Patent US2686975A successfully refreshed from Google Patents.
US2686975A
Expired / Lapsed
US
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Inside and outside calipering apparatus
Assignee: Individual
•
Filing: 1950-09-22
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Granted: 1954-08-24
•
Expires: 1970-09-22
Abstract
No abstract record available.
Inventors
- 👤 Helen A Geipel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:10
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/20; G01B5/213
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US181809A
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US1325631A
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US979248A
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US1020020A
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US1151635A
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GB126453A
Cited
GB143615A
Cited
US1516769A
Cited
US1656302A
Cited
US1617669A
Cited
US2572999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |