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Patent US2456822A successfully refreshed from Google Patents.
US2456822A
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US
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Slider for sliding fasteners
Assignee: Aero Zipp Fasteners Ltd
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Filing: 1943-04-13
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Granted: 1948-12-21
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Expires: 1963-04-13
Abstract
No abstract record available.
Inventors
- 👤 Engel Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:25
CPC Classifications
A; A44; A44B; A44B19/00; A44B19/24; A44B19/26; A44B19/262; A44B19/265; Y; Y10; Y10T; Y10T24/00; Y10T24/25; Y10T24/2561; Y10T24/2586
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1553499A
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US1813227A
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US1886123A
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US1882672A
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CH150896A
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US2065250A
Cited
US2072200A
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US2214705A
Cited
US2276676A
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US2325709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-21 | 1952-06-21 | 1952-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-21 | 1956-06-21 | 1956-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-21 | 1960-06-21 | 1960-12-21 | $7700.00 | Window Closed / Lapsed |