Patent US1854517A successfully refreshed from Google Patents.
US1854517A
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US
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Assignee: Individual
•
Filing: 1928-07-11
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Granted: 1932-04-19
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Expires: 1948-07-11
Abstract
No abstract record available.
Inventors
- 👤 Ollyn A Layne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:41
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/08; E21B43/086; Y; Y10; Y10S; Y10S29/00; Y10S29/035; Y10T; Y10T29/00; Y10T29/49; Y10T29/496; Y10T29/49602
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) | 1935-04-19 | 1935-10-19 | 1936-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-04-19 | 1939-10-19 | 1940-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-04-19 | 1943-10-19 | 1944-04-19 | $7700.00 | Window Closed / Lapsed |