US1558647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protection of metallic surfaces against incrustation and corrosion
Assignee: AG fur CHEMISCHE INDUSTRIE IN LIECHTENSTEIN
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Filing: 1923-08-14
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Granted: 1925-10-27
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Expires: 1943-08-14
Abstract
No abstract record available.
Inventors
- 👤 Thalhofer Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:39
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/48; C02F1/484; C02F1/485; C02F1/34; C02F2201/00; C02F2201/46; C02F2201/461; C02F2201/46105; C02F2201/4616; C02F2201/46175; C02F2201/48; C02F2201/483; C02F2303/00; C02F2303/22
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) | 1928-10-26 | 1929-04-27 | 1929-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-10-26 | 1933-04-27 | 1933-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-10-26 | 1937-04-27 | 1937-10-27 | $7700.00 | Window Closed / Lapsed |