US2458073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating magnesium and magnesium alloys
Assignee: Parker Appliance Co
•
Filing: 1944-01-06
•
Granted: 1949-01-04
•
Expires: 1964-01-06
Abstract
No abstract record available.
Inventors
- 👤 Herman W Hemker
- 👤 Donald L Eppink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:33
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/60
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1451755A
Cited
US1642309A
Cited
US1811298A
Cited
GB331853A
Cited
AT129294B
Cited
US2018388A
Cited
US2066180A
Cited
US2077450A
Cited
US2148331A
Cited
DE706313C
Cited
US2228259A
Cited
US2313755A
Cited
US2321948A
Cited
US2268331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-04 | 1952-07-05 | 1953-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-04 | 1956-07-05 | 1957-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-04 | 1960-07-05 | 1961-01-04 | $7700.00 | Window Closed / Lapsed |