US2021820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of articles having a multicolor finish
Assignee: PORCELAIN ENAMEL AND MANUFACTURING Co OF BALTIMORE
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Filing: 1931-05-06
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Granted: 1935-11-19
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Expires: 1951-05-06
Abstract
No abstract record available.
Inventors
- 👤 Nowak Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:53
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/52; C04B41/4505; C23; C23D; C23D5/00; C23D5/06; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24926
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) | 1938-11-18 | 1939-05-20 | 1939-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-11-18 | 1943-05-20 | 1943-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-11-18 | 1947-05-20 | 1947-11-19 | $7700.00 | Window Closed / Lapsed |