Patent US3419227A successfully refreshed from Google Patents.
US3419227A
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US
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Device for locking a hollow core to a drive shaft
Assignee: Gottfried Wl Werkmeister
•
Filing: 1966-12-20
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Granted: 1968-12-31
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Expires: 1986-12-20
Abstract
No abstract record available.
Inventors
- 👤 Gottfried W L Werkmeister
- 👤 Reginald J Mccarthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:43
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/04; B65H75/08; B65H75/18; B65H75/24; B65H75/242; B65H75/246; Y; Y10; Y10T; Y10T279/00; Y10T279/14; Y10T403/00; Y10T403/70; Y10T403/7009; Y10T403/7045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1673444A
Cited
US3073632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |