Patent US2833326A successfully refreshed from Google Patents.
US2833326A
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US
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Screw or nut with locking projections
Assignee: Illinois Tool Works Inc
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Filing: 1956-04-19
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Granted: 1958-05-06
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Expires: 1976-04-19
Abstract
No abstract record available.
Inventors
- 👤 Knohl Friedrich Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:21
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/22; F16B39/28; F16B39/282; F16B25/00; F16B25/001; F16B25/0021; F16B25/0036; F16B25/0084; F16B25/10; F16B25/103; F16B35/00; F16B35/04; F16B35/041; F16B35/044; F16B35/06; F16B39/24; F16B39/26; F16B2200/00; F16B2200/93; F16B31/00; F16B31/02; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/956; Y10S411/957; Y10S411/959
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR621686A
Cited
US1833462A
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US2037586A
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US2147209A
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US2147211A
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US2112494A
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US2253241A
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US2479730A
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US2654284A
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US2741289A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |