Patent US3452637A successfully refreshed from Google Patents.
US3452637A
Expired / Lapsed
US
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Fastener and attachment therefor
Assignee: Illinois Tool Works Inc
•
Filing: 1967-11-24
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Granted: 1969-07-01
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Expires: 1987-11-24
Abstract
No abstract record available.
Inventors
- 👤 John J O'brien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:16
CPC Classifications
F; F16; F16B; F16B19/00; F16B19/14; Y; Y10; Y10S; Y10S411/00; Y10S411/913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2255650A
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NL90348C
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US2968984A
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DE1099807B
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US3137195A
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US3139768A
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US3212388A
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US3241428A
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FR1332253A
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US3289522A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |