US1435592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making piston rings
Assignee: D & M Autoparts Co
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Filing: 1920-03-11
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Granted: 1922-11-14
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Expires: 1940-03-11
Abstract
No abstract record available.
Inventors
- 👤 Harry C Doan
- 👤 Clifford J Marson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:45
CPC Classifications
B; B23; B23P; B23P15/00; B23P15/08; Y; Y10; Y10S; Y10S277/00; Y10S277/922; Y10S277/924; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49274; Y10T29/49281; Y10T29/49284
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) | 1925-11-13 | 1926-05-15 | 1926-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-11-13 | 1930-05-15 | 1930-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-11-13 | 1934-05-15 | 1934-11-14 | $7700.00 | Window Closed / Lapsed |