US2902265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat retriever
Assignee: Individual
•
Filing: 1957-05-28
•
Granted: 1959-09-01
•
Expires: 1977-05-28
Abstract
No abstract record available.
Inventors
- 👤 Dubovick Gustave
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:44
CPC Classifications
F; F24; F24B; F24B7/00; F24B7/005; F23; F23J; F23J11/00; F23M; F23M20/00; Y; Y10; Y10S; Y10S165/00; Y10S165/228; Y10S165/302; Y10S165/314; Y10S165/315; Y10S165/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US463209A
Cited
US2055056A
Cited
US2343542A
Cited
US1521864A
Cited
US1953302A
Cited
US2174710A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |