US3406047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vitreous enameling steel and method of making same
Assignee: Lee Wilson Engineering Co Inc
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Filing: 1966-02-07
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Granted: 1968-10-15
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Expires: 1986-02-07
Abstract
No abstract record available.
Inventors
- 👤 James K Magor
- 👤 Donald S Gaydosh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:37
CPC Classifications
C; C21; C21D; C21D3/00; C21D3/02; C21D3/04; C21D8/00; C21D8/02; C21D8/0247; C21D8/0257; C23; C23D; C23D3/00; C21D2221/00; C21D2221/10; C21D8/0221; C21D8/0236; Y; Y10; Y10S; Y10S148/00; Y10S148/901
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) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |