Patent AT106909B successfully refreshed from Google Patents.
US1851553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing pistons
Assignee: Individual
•
Filing: 1930-06-14
•
Granted: 1932-03-29
•
Expires: 1950-06-14
Abstract
No abstract record available.
Inventors
- 👤 Clinton L Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:59
CPC Classifications
B; B23; B23P; B23P15/00; B23P15/10; Y; Y10; Y10S; Y10S29/00; Y10S29/026; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49249; Y10T29/49758; Y10T29/4976; Y10T82/00; Y10T82/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1935-03-29 | 1935-09-28 | 1936-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-03-29 | 1939-09-28 | 1940-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-03-29 | 1943-09-28 | 1944-03-29 | $7700.00 | Window Closed / Lapsed |