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US2581021A
Expired / Lapsed
US
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Bilaterally and uniformly extensible unit
Assignee: Bee Line Co
•
Filing: 1948-11-19
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Granted: 1952-01-01
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Expires: 1968-11-19
Abstract
No abstract record available.
Inventors
- 👤 Le Roy V Jacobsen
- 👤 Gilbert G Gosline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:40
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/0025; G01B5/24; G01B5/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2000866A
Cited
US2070518A
Cited
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 |