Patent US1787477A successfully refreshed from Google Patents.
US1787477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for chromium plating
Assignee: CG Spring and Bumper Co
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Filing: 1927-01-24
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Granted: 1931-01-06
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Expires: 1947-01-24
Abstract
No abstract record available.
Inventors
- 👤 John A Hanley
- 👤 Walter L Pinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:29
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/34
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) | 1934-01-05 | 1934-07-07 | 1935-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-01-05 | 1938-07-07 | 1939-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-01-05 | 1942-07-07 | 1943-01-06 | $7700.00 | Window Closed / Lapsed |