US3022781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater
Assignee: Individual
•
Filing: 1959-06-11
•
Granted: 1962-02-27
•
Expires: 1979-06-11
Abstract
No abstract record available.
Inventors
- 👤 Andrassy Stella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:24
CPC Classifications
F; F24; F24S; F24S10/00; F24S10/70; F24S10/73; F24S10/72; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/44; Y10; Y10S; Y10S165/00; Y10S165/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US254265A
Cited
US1467005A
Cited
US2274492A
Cited
US2427262A
Cited
US2398292A
Cited
US2397232A
Cited
US2489751A
Cited
US2580555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |