US3445616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric flame generator
Assignee: Corning Glass Works
•
Filing: 1966-12-06
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Granted: 1969-05-20
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Expires: 1986-12-06
Abstract
No abstract record available.
Inventors
- 👤 Edwin M Guyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:23
CPC Classifications
B; B23; B23K; B23K10/00; C; C21; C21C; C21C5/00; C21C5/52; H; H05; H05H; H05H1/00; H05H1/24; H05H1/26; H05H1/30; H05H1/32; H05H1/44; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |