US2993404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring minute angular deflections
Assignee: Daystrom Inc
•
Filing: 1957-10-15
•
Granted: 1961-07-25
•
Expires: 1977-10-15
Abstract
No abstract record available.
Inventors
- 👤 Rouy Auguste Louis Mar Antoine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:23
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/21; G01B; G01B11/00; G01B11/26; G01C; G01C1/00; G01C1/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US730016A
Cited
US2410502A
Cited
US2450839A
Cited
US2464521A
Cited
US2617618A
Cited
US2565782A
Cited
US2604004A
Cited
US2795991A
Cited
US2830488A
Cited
US2880644A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |