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US2817432A
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US
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Assignee: Individual
•
Filing: 1954-10-25
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Granted: 1957-12-24
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Expires: 1974-10-25
Abstract
No abstract record available.
Inventors
- 👤 John D Grigsby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:48
CPC Classifications
A; A47; A47G; A47G25/00; A47G25/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1254966A
Cited
US1667482A
Cited
US1900814A
Cited
US2070931A
Cited
US2639028A
Cited
US2635740A
Cited
US2751734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |