Patent US2589967A successfully refreshed from Google Patents.
US2589967A
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US
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Assignee: Individual
•
Filing: 1949-10-12
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Granted: 1952-03-18
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Expires: 1969-10-12
Abstract
No abstract record available.
Inventors
- 👤 Lester T Sawyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:26
CPC Classifications
A; A47; A47G; A47G19/00; A47G19/22; A47G19/2205; A47G19/2261
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US140793A
Cited
US666313A
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GB190610537A
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US862953A
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GB359404A
Cited
US2012113A
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GB444421A
Cited
GB430705A
Cited
US2210509A
Cited
US2504541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |