Patent US2914781A successfully refreshed from Google Patents.
US2914781A
Expired / Lapsed
US
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Screw and washer assembling apparatus
Assignee: Individual
•
Filing: 1955-09-30
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Granted: 1959-12-01
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Expires: 1975-09-30
Abstract
No abstract record available.
Inventors
- 👤 Howard D Prutton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:48
CPC Classifications
B; B23; B23P; B23P19/00; B23P19/04; B23P19/08; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53313; Y10T29/53374
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2183600A
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US663122A
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US1861889A
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US2271154A
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US2284690A
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US2577020A
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US2642593A
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US2642592A
Cited
US2752618A
Cited
US2792578A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |