Patent US1489912A successfully refreshed from Google Patents.
US1489912A
Expired / Lapsed
US
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Compressor
Assignee: Individual
•
Filing: 1922-03-22
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Granted: 1924-04-08
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Expires: 1942-03-22
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Winkler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:53
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/08; F16K15/12; F04; F04B; F04B37/00; F04B37/10; F04B37/14; F04B37/16; F04B39/00; F04B39/0005; F04B39/0016; F04B39/10; F04B39/102; F04B39/1033; F17; F17C; F17C9/00; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7771; Y10T137/7772; Y10T137/7773; Y10T137/7837; Y10T137/7838
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1927-04-08 | 1927-10-08 | 1928-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-04-08 | 1931-10-08 | 1932-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-04-08 | 1935-10-08 | 1936-04-08 | $7700.00 | Window Closed / Lapsed |