US2469735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polishing machine
Assignee: Standard Steel Spring Co
•
Filing: 1948-07-10
•
Granted: 1949-05-10
•
Expires: 1968-07-10
Abstract
No abstract record available.
Inventors
- 👤 Edward C Lindsay
- 👤 Eugene L Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:42
CPC Classifications
B; B24; B24B; B24B21/00; B24B21/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1045945A
Cited
US2106082A
Cited
US2089808A
Cited
US2199069A
Cited
US2272273A
Cited
US2334960A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-09 | 1952-11-08 | 1953-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-09 | 1956-11-08 | 1957-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-09 | 1960-11-08 | 1961-05-10 | $7700.00 | Window Closed / Lapsed |