US3514942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar heat transducer apparatus
Assignee: WILLIAM F KYRYLUK
•
Filing: 1968-02-14
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Granted: 1970-06-02
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Expires: 1988-02-14
Abstract
No abstract record available.
Inventors
- 👤 William F Kyryluk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:17
CPC Classifications
F; F03; F03G; F03G6/00; F03G6/003; F03G6/02; F03G6/04; F03G6/045; F03G6/071; F24; F24S; F24S10/00; F24S10/50; F24S60/00; F24S60/10; F24S60/30; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/44; Y02E10/46
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) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |