US2449930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressor
Assignee: Individual
•
Filing: 1943-11-03
•
Granted: 1948-09-21
•
Expires: 1963-11-03
Abstract
No abstract record available.
Inventors
- 👤 Paul H Davey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:24
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/0005; F04B39/0022; F04B27/00; F04B27/04; F04B27/053; F04B39/0094; F04B39/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB110983A
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US1376857A
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GB163227A
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US1426022A
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US1556658A
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US1555287A
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US1481936A
Cited
US1722488A
Cited
US1694218A
Cited
US1803591A
Cited
US2014440A
Cited
US1877495A
Cited
US2142712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-21 | 1952-03-22 | 1952-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-21 | 1956-03-22 | 1956-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-21 | 1960-03-22 | 1960-09-21 | $7700.00 | Window Closed / Lapsed |