US2497822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricator
Assignee: Standard Stoker Co
•
Filing: 1945-09-05
•
Granted: 1950-02-14
•
Expires: 1965-09-05
Abstract
No abstract record available.
Inventors
- 👤 Martin Eugene
- 👤 Joseph B Mackenzie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:38
CPC Classifications
F; F01; F01B; F01B31/00; F01B31/10; F04; F04B; F04B9/00; F04B9/08; F04B9/12; F04B9/123; F04B9/127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US113200A
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US305678A
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US491224A
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US504178A
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US657643A
Cited
US958260A
Cited
US1186487A
Cited
US1540943A
Cited
US1837811A
Cited
US1897609A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |