Patent US2250456A successfully refreshed from Google Patents.
US2250456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porcelain enamel
Assignee: Vibrantz Corp
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Filing: 1939-12-28
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Granted: 1941-07-29
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Expires: 1959-12-28
Abstract
No abstract record available.
Inventors
- 👤 Monroe J Bahnsen
- 👤 Eugene E Bryant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:23
CPC Classifications
C; C03; C03C; C03C8/00; C03C8/02; C03C8/08; C03C3/00; C03C3/04; C03C3/062; C03C3/064; C03C3/066
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) | 1944-07-28 | 1945-01-27 | 1945-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-07-28 | 1949-01-27 | 1949-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-07-28 | 1953-01-27 | 1953-07-29 | $7700.00 | Window Closed / Lapsed |