US2530159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esson
Assignee: —
•
Filing: —
•
Granted: 1950-11-14
•
Expires: 1967-11-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:27
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/08; F24B; F24B1/00; F24B5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US28081A
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US38423A
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US90850A
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US125377A
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US181634A
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US301608A
Cited
US515515A
Cited
US2224534A
Cited
US900821A
Cited
US1757987A
Cited
US2330495A
Cited
US2417842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-13 | 1954-05-15 | 1954-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-13 | 1958-05-15 | 1958-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-13 | 1962-05-15 | 1962-11-14 | $7700.00 | Window Closed / Lapsed |