US2447704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable shelving construction
Assignee: Blackstone Manufacturing Co Inc
•
Filing: 1945-02-17
•
Granted: 1948-08-24
•
Expires: 1965-02-17
Abstract
No abstract record available.
Inventors
- 👤 Kline Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:57
CPC Classifications
A; A47; A47B; A47B57/00; A47B57/06; A47B57/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US777256A
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US1200321A
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US1030472A
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US1080203A
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US1375869A
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US1389697A
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US1554011A
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US1435321A
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US1820716A
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US1814084A
Cited
GB469120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-24 | 1952-02-23 | 1952-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-24 | 1956-02-23 | 1956-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-24 | 1960-02-23 | 1960-08-24 | $7700.00 | Window Closed / Lapsed |