Patent US3192819A successfully refreshed from Google Patents.
US3192819A
Expired / Lapsed
US
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Thread forming screw having oval threads and a cutting edge
Assignee: Illinois Tool Works Inc
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Filing: 1961-04-03
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Granted: 1965-07-06
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Expires: 1981-04-03
Abstract
No abstract record available.
Inventors
- 👤 Walter M Hanneman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:15
CPC Classifications
F; F16; F16B; F16B25/00; F16B25/001; F16B25/0021; B; B21; B21H; B21H3/00; B21H3/02; B21H3/027; F16B25/0036; F16B25/0042; F16B25/0047; F16B25/0052; F16B39/00; F16B39/22; F16B39/24; F16B39/26; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10S411/938; Y10S411/955; Y10S411/956; Y10S411/957; Y10S411/959; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49938
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190704149A
Cited
US1912517A
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US1987474A
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US2165009A
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US2278411A
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US2255997A
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US2352982A
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US2414870A
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US3050755A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |