US2469597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for heating, sizing, or forming quartz tubes and profiles
Assignee: Individual
•
Filing: 1946-02-01
•
Granted: 1949-05-10
•
Expires: 1966-02-01
Abstract
No abstract record available.
Inventors
- 👤 Guigas Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:33
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/04; C03B23/047; C03B23/0476; Y; Y10; Y10S; Y10S65/00; Y10S65/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE506384C
Cited
US1282933A
Cited
DE339503C
Cited
US1724793A
Cited
US1749700A
Cited
US1980875A
Cited
US2209739A
Cited
US2234863A
Cited
US2140213A
Cited
US2393979A
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 |