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Patent US3009739A successfully refreshed from Google Patents.
US3009739A
Expired / Lapsed
US
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Stool
Assignee: Hamilton Cosco Inc
•
Filing: 1959-04-27
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Granted: 1961-11-21
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Expires: 1979-04-27
Abstract
No abstract record available.
Inventors
- 👤 Earl F Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:11
CPC Classifications
A; A47; A47C; A47C3/00; A47C3/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US199763A
Cited
US1467830A
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US1716694A
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US2206533A
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US2234344A
Cited
US2598788A
Cited
US2641310A
Cited
US2648579A
Cited
US2825394A
Cited
US2876828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-20 | 1965-05-22 | 1965-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-20 | 1969-05-22 | 1969-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-20 | 1973-05-22 | 1973-11-21 | $7700.00 | Window Closed / Lapsed |