US2644588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Library shelf arrangement
Assignee: Hamilton Manufacturing Co
•
Filing: 1950-11-09
•
Granted: 1953-07-07
•
Expires: 1970-11-09
Abstract
No abstract record available.
Inventors
- 👤 Clifford S Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:47
CPC Classifications
A; A47; A47B; A47B53/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US252394A
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US1312133A
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US1466335A
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US1576420A
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US1639387A
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US1734993A
Cited
FR752058A
Cited
US2100992A
Cited
US2104913A
Cited
US2157611A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |