US1513974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quenching apparatus
Assignee: Timken Co
•
Filing: 1923-02-12
•
Granted: 1924-11-04
•
Expires: 1943-02-12
Abstract
No abstract record available.
Inventors
- 👤 Erik W Ehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:44
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/08; C21D9/085
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) | 1927-11-04 | 1928-05-05 | 1928-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-11-04 | 1932-05-05 | 1932-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-11-04 | 1936-05-05 | 1936-11-04 | $7700.00 | Window Closed / Lapsed |