US2530154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable vertical element
Assignee: Arma Corp
•
Filing: 1945-09-28
•
Granted: 1950-11-14
•
Expires: 1965-09-28
Abstract
No abstract record available.
Inventors
- 👤 Arthur P Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:20
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/44; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1229; Y10T74/1232; Y10T74/1243
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1866706A
Cited
GB191513280A
Cited
GB125660A
Cited
US1644921A
Cited
US1887318A
Cited
US1923290A
Cited
US2087961A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-13 | 1954-05-15 | 1954-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-13 | 1958-05-15 | 1958-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-13 | 1962-05-15 | 1962-11-14 | $7700.00 | Window Closed / Lapsed |