US3493770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation sensitive control system for crystal growing apparatus
Assignee: International Business Machines Corp
•
Filing: 1966-03-01
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Granted: 1970-02-03
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Expires: 1986-03-01
Abstract
No abstract record available.
Inventors
- 👤 Ralph G Dessauer
- 👤 Eugene J Patzner
- 👤 Michael R Poponiak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:49
CPC Classifications
C; C30; C30B; C30B15/00; C30B15/20; C30B15/22; C30B15/26; Y; Y10; Y10T; Y10T117/00; Y10T117/10; Y10T117/1004; Y10T117/1008; Y10T117/1024; Y10T117/1032; Y10T117/1072
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |