Patent US2728091A successfully refreshed from Google Patents.
US2728091A
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Apparatus for and method of assembling washers and nut elements
Assignee: Illinois Tool Works Inc
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Filing: 1951-10-11
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Granted: 1955-12-27
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Expires: 1971-10-11
Abstract
No abstract record available.
Inventors
- 👤 Robert L Hoenk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:59
CPC Classifications
B; B23; B23P; B23P19/00; B23P19/04; B23P19/08; B23P19/082; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53313
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US828682A
Cited
US1047026A
Cited
US1156434A
Cited
US1445296A
Cited
US1456216A
Cited
US1644999A
Cited
US1863223A
Cited
US1861889A
Cited
US1883068A
Cited
US1958180A
Cited
US1929146A
Cited
US1897116A
Cited
US1914313A
Cited
US2070032A
Cited
US2303225A
Cited
US2270713A
Cited
US2307132A
Cited
US2350486A
Cited
US2435589A
Cited
US2398659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |