Patent US2321439A successfully refreshed from Google Patents.
US2321439A
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Method of making vitreous coated bodies
Assignee: Hartford National Bank and Trust Co
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Filing: 1937-08-19
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Granted: 1943-06-08
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Expires: 1957-08-19
Abstract
No abstract record available.
Inventors
- 👤 Verwey Evert Johannes Willem
- 👤 Willigen Paul Christiaan V Der
- 👤 Hoekstra Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:44
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/02; H01B3/08; H01B3/088; C; C04; C04B; C04B41/00; C04B41/45; C04B41/4505; C23; C23D; C23D5/00; C23D5/02; C25; C25D; C25D13/00; C25D13/02
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) | 1946-06-07 | 1946-12-07 | 1947-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-06-07 | 1950-12-07 | 1951-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-06-07 | 1954-12-07 | 1955-06-08 | $7700.00 | Window Closed / Lapsed |