US2427638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressor
Assignee: Copeland Industrial LP
•
Filing: 1944-08-16
•
Granted: 1947-09-16
•
Expires: 1964-08-16
Abstract
No abstract record available.
Inventors
- 👤 Ernest F Vilter
- 👤 William E Michener
- 👤 Karl L Kraatz
- 👤 Max E Ruess
- 👤 Charles G Bach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:26
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/02; F04B39/0223; F04B39/023; F04B39/0261; F04B27/00; F04B27/04; F04B27/0404; F04B27/053; F04B49/00; F04B49/22; F04B49/24; F04B49/243
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US677503A
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US1653110A
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US1840045A
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US1967001A
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US2155257A
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US2137220A
Cited
US2225228A
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US2235962A
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US2274942A
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US2280296A
Cited
US2306813A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-15 | 1951-03-17 | 1951-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-15 | 1955-03-17 | 1955-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-15 | 1959-03-17 | 1959-09-16 | $7700.00 | Window Closed / Lapsed |