Patent US1639862A successfully refreshed from Google Patents.
US1639862A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1923-01-15
•
Granted: 1927-08-23
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Expires: 1943-01-15
Abstract
No abstract record available.
Inventors
- 👤 Carl S Shilling
- 👤 Duffey B Louzon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:17
CPC Classifications
E; E05; E05B; E05B85/00; E05B85/20; E05B85/24; Y; Y10; Y10S; Y10S292/00; Y10S292/23; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0848; Y10T292/0849; Y10T292/0851; Y10T292/0854
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) | 1930-08-22 | 1931-02-21 | 1931-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-08-22 | 1935-02-21 | 1935-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-08-22 | 1939-02-21 | 1939-08-23 | $7700.00 | Window Closed / Lapsed |