US2981196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condensate pump and control means
Assignee: March Manufacturing Co
•
Filing: 1959-04-27
•
Granted: 1961-04-25
•
Expires: 1979-04-27
Abstract
No abstract record available.
Inventors
- 👤 Frederick N Zimmermann
- 👤 Willy E Zimmermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:53
CPC Classifications
F; F22; F22D; F22D5/00; F22D5/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1812874A
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US2054205A
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US2397171A
Cited
US2661146A
Cited
US2739536A
Cited
US2815717A
Cited
US2829598A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |