US2790573A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1954-10-14
•
Granted: 1957-04-30
•
Expires: 1974-10-14
Abstract
No abstract record available.
Inventors
- 👤 William D Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:21
CPC Classifications
A; A47; A47J; A47J41/00; A47J41/0055; A47J41/0066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US753410A
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US1098053A
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US1053989A
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US1999064A
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US2235293A
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US2439276A
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US2437382A
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US2610757A
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US2571892A
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US2670776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-29 | 1960-10-29 | 1961-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-29 | 1964-10-29 | 1965-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-29 | 1968-10-29 | 1969-04-30 | $7700.00 | Window Closed / Lapsed |