US2447028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Freight handling device
Assignee: WILLARD B MCGRANAHAN
•
Filing: 1945-07-23
•
Granted: 1948-08-17
•
Expires: 1965-07-23
Abstract
No abstract record available.
Inventors
- 👤 William M Riddick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:17
CPC Classifications
B; B65; B65D; B65D19/00; B65D19/38; B65D19/40; B65D19/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1331144A
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US1357686A
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US1471762A
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US1440588A
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US1608039A
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US1711577A
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US1745258A
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US1793965A
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US1820765A
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US1808875A
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US1758144A
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US1840435A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-17 | 1952-02-16 | 1952-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-17 | 1956-02-16 | 1956-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-17 | 1960-02-16 | 1960-08-17 | $7700.00 | Window Closed / Lapsed |