US3470704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermodynamic apparatus and method
Assignee: Individual
•
Filing: 1967-01-10
•
Granted: 1969-10-07
•
Expires: 1987-01-10
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Kantor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:17
CPC Classifications
F; F25; F25B; F25B3/00; F01; F01K; F01K11/00; F01K11/04; F25B15/00; F25B15/004; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
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) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |