US2515086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-treating apparatus
Assignee: Selas Corp of America
•
Filing: 1946-09-18
•
Granted: 1950-07-11
•
Expires: 1966-09-18
Abstract
No abstract record available.
Inventors
- 👤 Frederic O Hess
- 👤 Maud Fred
- 👤 William B Troupe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:52
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/0062
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1194906A
Cited
US1425660A
Cited
US634979A
Cited
US643278A
Cited
US736103A
Cited
US1388575A
Cited
US1592661A
Cited
US1539848A
Cited
US1958846A
Cited
US1836337A
Cited
US2098624A
Cited
GB492066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-10 | 1954-01-09 | 1954-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-10 | 1958-01-09 | 1958-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-10 | 1962-01-09 | 1962-07-11 | $7700.00 | Window Closed / Lapsed |