Patent US6168614B1 successfully refreshed from Google Patents.
US1310232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston-ring compressor
Assignee: —
•
Filing: —
•
Granted: 1919-07-15
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Expires: 1936-07-15
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:06
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/02; B25B27/12; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/536; Y10T29/53604; Y10T29/53609
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) | 1922-07-14 | 1923-01-13 | 1923-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-07-14 | 1927-01-13 | 1927-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-07-14 | 1931-01-13 | 1931-07-15 | $7700.00 | Window Closed / Lapsed |