Patent US4961779A successfully refreshed from Google Patents.
Patent US2370695A successfully refreshed from Google Patents.
US2370695A
Expired / Lapsed
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Production of superopaque vitreous enamels
Assignee: Pemco Corp
•
Filing: 1940-06-21
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Granted: 1945-03-06
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Expires: 1960-06-21
Abstract
No abstract record available.
Inventors
- 👤 Paul C Stufft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:00
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/062; C03C3/064; C03C3/066; C03C3/076; C03C3/11; C03C3/112; C03C3/115; C03C3/118; C03C8/00; C03C8/02; C03C8/08; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/905
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) | 1948-03-05 | 1948-09-04 | 1949-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-03-05 | 1952-09-04 | 1953-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-03-05 | 1956-09-04 | 1957-03-06 | $7700.00 | Window Closed / Lapsed |