Patent DE224901C successfully refreshed from Google Patents.
Patent US2452437A successfully refreshed from Google Patents.
US2452437A
Expired / Lapsed
US
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Fastening device
Assignee: Individual
•
Filing: 1943-11-03
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Granted: 1948-10-26
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Expires: 1963-11-03
Abstract
No abstract record available.
Inventors
- 👤 Edmond C Crowther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:30
CPC Classifications
F; F16; F16B; F16B5/00; F16B5/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1955740A
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US2171773A
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US2123068A
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US2293581A
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US2307132A
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US2347675A
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US2317787A
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US2295488A
Cited
US2327555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-26 | 1952-04-26 | 1952-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-26 | 1956-04-26 | 1956-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-26 | 1960-04-26 | 1960-10-26 | $7700.00 | Window Closed / Lapsed |