US1069255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass furnace and process.
Assignee: Individual
•
Filing: 1910-08-26
•
Granted: 1913-08-05
•
Expires: 1930-08-26
Abstract
No abstract record available.
Inventors
- 👤 Paul L T Heroult
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:45
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/02; C03B5/027; C03B5/0275; Y; Y10; Y10S; Y10S65/00; Y10S65/04
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) | 1916-08-04 | 1917-02-03 | 1917-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1920-08-04 | 1921-02-03 | 1921-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1924-08-04 | 1925-02-03 | 1925-08-05 | $7700.00 | Window Closed / Lapsed |