US1290476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rust-proofing coating for iron and steel.
Assignee: Individual
•
Filing: 1917-01-08
•
Granted: 1919-01-07
•
Expires: 1937-01-08
Abstract
No abstract record available.
Inventors
- 👤 William H Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:58
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/34; C23C22/36; C23C22/362
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) | 1922-01-06 | 1922-07-08 | 1923-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-01-06 | 1926-07-08 | 1927-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-01-06 | 1930-07-08 | 1931-01-07 | $7700.00 | Window Closed / Lapsed |