Patent US2051998A successfully refreshed from Google Patents.
US2051998A
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US
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Assignee: Individual
•
Filing: 1935-05-08
•
Granted: 1936-08-25
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Expires: 1955-05-08
Abstract
No abstract record available.
Inventors
- 👤 Monroe Verne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:52
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/02; E21B19/06; E21B19/07; Y; Y10; Y10S; Y10S29/00; Y10S29/035; Y10T; Y10T279/00; Y10T279/17; Y10T279/17564; Y10T279/17598
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) | 1939-08-25 | 1940-02-24 | 1940-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-08-25 | 1944-02-24 | 1944-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-08-25 | 1948-02-24 | 1948-08-25 | $7700.00 | Window Closed / Lapsed |