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US1669741A
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US
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Assignee: Individual
•
Filing: 1927-04-18
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Granted: 1928-05-15
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Expires: 1947-04-18
Abstract
No abstract record available.
Inventors
- 👤 Elmer R Edson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:31
CPC Classifications
E; E01; E01B; E01B7/00; E01B7/02; E01B7/08; E01B2202/00; E01B2202/02; E01B2202/025
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) | 1931-05-15 | 1931-11-14 | 1932-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-05-15 | 1935-11-14 | 1936-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-05-15 | 1939-11-14 | 1940-05-15 | $7700.00 | Window Closed / Lapsed |