Patent US2731712A successfully refreshed from Google Patents.
US2731712A
Expired / Lapsed
US
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Positioning tool for establishing working surfaces
Assignee: Glenn L Martin Co
•
Filing: 1950-05-02
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Granted: 1956-01-24
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Expires: 1970-05-02
Abstract
No abstract record available.
Inventors
- 👤 Leon E Laux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:43
CPC Classifications
B; B25; B25B; B25B5/00; B25B5/006; B25B11/00; B25B11/02; B25B5/14; B25B5/147; F; F16; F16M; F16M11/00; F16M11/02; F16M11/04; F16M11/06; F16M11/12; F16M11/14; F16M2200/00; F16M2200/02; F16M2200/021; F16M2200/022
Claims Analysis
Total Claims: 0
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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) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |