Patent US4085628A successfully refreshed from Google Patents.
Patent US1973087A successfully refreshed from Google Patents.
US1973087A
Expired / Lapsed
US
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Metal treating compound and method of using the same
Assignee: PEERLESS Inc
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Filing: 1932-04-30
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Granted: 1934-09-11
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Expires: 1952-04-30
Abstract
No abstract record available.
Inventors
- 👤 John W Markley
- 👤 Thomas W Clement
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:50
CPC Classifications
C; C23; C23G; C23G1/00
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) | 1937-09-10 | 1938-03-12 | 1938-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-09-10 | 1942-03-12 | 1942-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-09-10 | 1946-03-12 | 1946-09-11 | $7700.00 | Window Closed / Lapsed |