US1756772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating materials
Assignee: ALCHEMIC GOLD Co Inc
•
Filing: 1927-04-25
•
Granted: 1930-04-29
•
Expires: 1947-04-25
Abstract
No abstract record available.
Inventors
- 👤 Weisberg Louis
- 👤 Roger B Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:31
CPC Classifications
B; B05; B05B; B05B3/00; B05B3/001; B05B3/02; B05B3/10; B05B7/00; B05B7/16; Y; Y10; Y10S; Y10S159/00; Y10S159/21
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) | 1933-04-28 | 1933-10-28 | 1934-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-04-28 | 1937-10-28 | 1938-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-04-28 | 1941-10-28 | 1942-04-29 | $7700.00 | Window Closed / Lapsed |