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US2591561A
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Apparatus for producing refractory rods
Assignee: Elgin National Watch Co
•
Filing: 1943-04-28
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Granted: 1952-04-01
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Expires: 1963-04-28
Abstract
No abstract record available.
Inventors
- 👤 Lester Raymond Holmes
- 👤 Cannon Melvin Croxall
- 👤 Jr Frank Creighton Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:04
CPC Classifications
C; C30; C30B; C30B11/00; C30B11/04; C30B11/08; C30B11/10; Y; Y10; Y10S; Y10S266/00; Y10S266/904; Y10S65/00; Y10S65/04; Y10T; Y10T117/00; Y10T117/10; Y10T117/1024; Y10T117/1028
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |