US2580674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for determining the axis of rotation of rotatable elements
Assignee: Individual
•
Filing: 1945-09-29
•
Granted: 1952-01-01
•
Expires: 1965-09-29
Abstract
No abstract record available.
Inventors
- 👤 Grlffin Richard Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:15
CPC Classifications
G; G01; G01B; G01B11/00; Y; Y10; Y10T; Y10T408/00; Y10T408/21
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2293371A
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US2331160A
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GB559851A
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US2382843A
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US2366430A
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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) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |