Patent US3488784A successfully refreshed from Google Patents.
US3488784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Work holding device
Assignee: Individual
•
Filing: 1967-08-18
•
Granted: 1970-01-13
•
Expires: 1987-08-18
Abstract
No abstract record available.
Inventors
- 👤 Friedrich Bernhard Hatebur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:50
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/44; B21K1/64; B21K27/00; B21K27/02; B21K27/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1929862A
Cited
US2074104A
Cited
US2272758A
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US2278103A
Cited
US2542864A
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US2689358A
Cited
US2721343A
Cited
US3217343A
Cited
US3295701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |