US2852056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw with plastic insert which locks and seals
Assignee: Illinois Tool Works Inc
•
Filing: 1955-05-31
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Granted: 1958-09-16
•
Expires: 1975-05-31
Abstract
No abstract record available.
Inventors
- 👤 George M Rapata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:08
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/22; F16B39/28; F16B39/34; F16B35/00; F16B35/04; F16B35/041; F16B35/044; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/947
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1158454A
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US1364298A
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US1576062A
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US1996716A
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US2159886A
Cited
US2273102A
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GB566254A
Cited
US2533894A
Cited
US2568640A
Cited
USRE23878E
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |