US3495952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangements for continuous contacting
Assignee: Czech Academy of Sciences
•
Filing: 1967-10-04
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Granted: 1970-02-17
•
Expires: 1987-10-04
Abstract
No abstract record available.
Inventors
- 👤 Jaromir Ulbrecht
- 👤 Jiri Nebrensky
- 👤 Mirko Kadlec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:32
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/02; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/232; B01F23/2321; B01J; B01J8/00; B01J8/18; B01J8/20; B01J8/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US243769A
Cited
US2885272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |