US3531260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid-cooled chuck with a freeze-through sensor
Assignee: AT&T Inc
•
Filing: 1967-07-28
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Granted: 1970-09-29
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Expires: 1987-07-28
Abstract
No abstract record available.
Inventors
- 👤 Walter H Diehl
- 👤 Adolph K Lagarde Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:59
CPC Classifications
C; C30; C30B; C30B13/00; C30B13/32; Y; Y10; Y10S; Y10S117/00; Y10S117/911; Y10T; Y10T117/00; Y10T117/10; Y10T117/1004; Y10T117/1024; Y10T117/1076
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2872597A
Cited
US2976378A
Cited
US3211881A
Cited
US3264560A
Cited
US3251658A
Cited
GB1115966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |