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US2620380A
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Assignee: Individual
•
Filing: 1947-04-18
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Granted: 1952-12-02
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Expires: 1967-04-18
Abstract
No abstract record available.
Inventors
- 👤 Lawrence W Baldwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:26
CPC Classifications
G; G01; G01P; G01P1/00; G01P1/12; G01P1/122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1804168A
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US1477017A
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US1465352A
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US1846678A
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US1849831A
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US2332773A
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US2355128A
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US2300198A
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US2425987A
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US2409857A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-02 | 1956-06-02 | 1956-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-02 | 1960-06-02 | 1960-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-02 | 1964-06-02 | 1964-12-02 | $7700.00 | Window Closed / Lapsed |