US2034802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acidproof self-hardening composition
Assignee: PENCHLOR Inc
•
Filing: 1931-06-02
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Granted: 1936-03-24
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Expires: 1951-06-02
Abstract
No abstract record available.
Inventors
- 👤 Frank Karl
- 👤 Dietz Karl
- 👤 Privinsky Franz
- 👤 Thiel Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:25
CPC Classifications
B; B65; B65D; B65D85/00; B65D85/70; B65D85/84; C; C08; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42
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) | 1939-03-24 | 1939-09-23 | 1940-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-03-24 | 1943-09-23 | 1944-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-03-24 | 1947-09-23 | 1948-03-24 | $7700.00 | Window Closed / Lapsed |