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US2469597A
Expired / Lapsed
US
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Method of and apparatus for heating, sizing, or forming quartz tubes and profiles
Assignee: Individual
•
Filing: 1946-02-01
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Granted: 1949-05-10
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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 15:49
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
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References Cited (Backward Citations)
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US1724793A
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US1749700A
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US1980875A
Cited
US2209739A
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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 |