Patent US3159780A successfully refreshed from Google Patents.
US2085976A
Expired / Lapsed
US
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Cylinder liner
Assignee: Heintz & Kaufman Ltd
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Filing: 1936-02-25
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Granted: 1937-07-06
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Expires: 1956-02-25
Abstract
No abstract record available.
Inventors
- 👤 Ralph M Heintz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:35
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/02; F02F1/04; F02F1/06; F02F1/08; F02F1/18; F02F1/20; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/4927; Y10T29/49272
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) | 1940-07-05 | 1941-01-04 | 1941-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-07-05 | 1945-01-04 | 1945-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-07-05 | 1949-01-04 | 1949-07-06 | $7700.00 | Window Closed / Lapsed |