Patent US1752462A successfully refreshed from Google Patents.
US1752462A
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US
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Nontarnishing metallic ink
Assignee: KINGSPORT PRESS Inc
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Filing: 1927-11-16
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Granted: 1930-04-01
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Expires: 1947-11-16
Abstract
No abstract record available.
Inventors
- 👤 Walter F Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:00
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/03; C09D11/037
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) | 1933-03-31 | 1933-09-30 | 1934-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-03-31 | 1937-09-30 | 1938-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-03-31 | 1941-09-30 | 1942-04-01 | $7700.00 | Window Closed / Lapsed |