Patent US2544100A successfully refreshed from Google Patents.
US2544100A
Expired / Lapsed
US
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Apparatus for measuring distances within bores
Assignee: Individual
•
Filing: 1948-09-24
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Granted: 1951-03-06
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Expires: 1968-09-24
Abstract
No abstract record available.
Inventors
- 👤 Miller John Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:09
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/10; G01S13/88
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2077707A
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US2281274A
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US2310559A
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US2401717A
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US2280226A
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US2364371A
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US2345932A
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US2400309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |