Patent US2421610A successfully refreshed from Google Patents.
US2421610A
Expired / Lapsed
US
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Apparatus for rustproofing or the like
Assignee: Parker Rust Proof Co
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Filing: 1942-05-29
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Granted: 1947-06-03
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Expires: 1962-05-29
Abstract
No abstract record available.
Inventors
- 👤 Robert H Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:47
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/73; C23C22/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US119403A
Cited
US936472A
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US1872507A
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US2003778A
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US2348698A
Cited
US2288788A
Cited
US2288007A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-02 | 1950-12-02 | 1951-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-02 | 1954-12-02 | 1955-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-02 | 1958-12-02 | 1959-06-03 | $7700.00 | Window Closed / Lapsed |