US3294392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum chucking
Assignee: Dunham Tool Co Inc
•
Filing: 1963-05-31
•
Granted: 1966-12-27
•
Expires: 1983-05-31
Abstract
No abstract record available.
Inventors
- 👤 Russell H Dunham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:32
CPC Classifications
B; B25; B25B; B25B11/00; B25B11/005; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49998; Y10T83/00; Y10T83/748
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1062579A
Cited
US1198402A
Cited
US2443987A
Cited
GB751253A
Cited
US2989827A
Cited
US3180608A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |