US3393439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bushing assembling apparatus
Assignee: H O CANFIELD CO
•
Filing: 1965-03-31
•
Granted: 1968-07-23
•
Expires: 1985-03-31
Abstract
No abstract record available.
Inventors
- 👤 Harry D Shriver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:57
CPC Classifications
B; B23; B23P; B23P19/00; B23P19/04; B25; B25B; B25B27/00; B25B27/14; B25B27/28; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/4987; Y10T29/53; Y10T29/53539; Y10T29/53543; Y10T29/53652; Y10T29/53657; Y10T29/53961; Y10T29/5397; Y10T403/00; Y10T403/45; Y10T403/455; Y10T403/458
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1778399A
Cited
US2261465A
Cited
US2632236A
Cited
US2839821A
Cited
US2987812A
Cited
US2992476A
Cited
US3238609A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |