US3319657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coil freeze protection device
Assignee: Individual
•
Filing: 1964-10-16
•
Granted: 1967-05-16
•
Expires: 1984-10-16
Abstract
No abstract record available.
Inventors
- 👤 Louis A Nyiri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:30
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/04; F16L55/045; F16L55/05; F16L55/052; F28; F28B; F28B9/00; F28B9/005; F28F; F28F27/00; Y; Y10; Y10T; Y10T137/00; Y10T137/1189
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1159225A
Cited
GB560612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |