US3054246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum heating pump assembly
Assignee: Individual
•
Filing: 1958-02-04
•
Granted: 1962-09-18
•
Expires: 1978-02-04
Abstract
No abstract record available.
Inventors
- 👤 Irving C Jennings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:17
CPC Classifications
F; F24; F24D; F24D1/00; F24D3/00; F24D3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1592024A
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US1567148A
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US2349731A
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GB637003A
Cited
US2547769A
Cited
FR1018944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |