Patent US2871765A successfully refreshed from Google Patents.
US2871765A
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Worm forming apparatus
Assignee: Illinois Tool Works Inc
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Filing: 1955-10-06
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Granted: 1959-02-03
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Expires: 1975-10-06
Abstract
No abstract record available.
Inventors
- 👤 Oliver E Saari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:30
CPC Classifications
B; B23; B23F; B23F13/00; B23F13/003; B23F13/006; B23F13/02; B23F13/04; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/300056; Y10T409/300168; Y10T409/30028; Y10T409/300672; Y10T409/300728
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US607626A
Cited
US627299A
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US1340031A
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US1376155A
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US1960460A
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US2392752A
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US2405485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |