US2530522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Harris
Assignee: —
•
Filing: —
•
Granted: 1950-11-21
•
Expires: 1967-11-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:39
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/002; F23H; F23H17/00; F23B; F23B2700/00; F23B2700/011
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US113535A
Cited
US156821A
Cited
US1368701A
Cited
US1714649A
Cited
US659971A
Cited
US955758A
Cited
US843106A
Cited
US1121557A
Cited
US2433036A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |