US3534530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for producing electric fields
Assignee: Individual
•
Filing: 1969-03-26
•
Granted: 1970-10-20
•
Expires: 1989-03-26
Abstract
No abstract record available.
Inventors
- 👤 Alfred Hornig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:15
CPC Classifications
F; F24; F24F; F24F8/00; F24F8/10; F24F8/192; A; A61; A61N; A61N1/00; A61N1/10; Y; Y02; Y02A; Y02A50/00; Y02A50/20; Y10; Y10S; Y10S422/00; Y10S422/906
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |