US2520428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Center of gravity calculator
Assignee: Individual
•
Filing: 1946-09-23
•
Granted: 1950-08-29
•
Expires: 1966-09-23
Abstract
No abstract record available.
Inventors
- 👤 Nilakantan Parameswar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:36
CPC Classifications
G; G01; G01M; G01M1/00; G01M1/12; G01M1/122; G01M1/125; G01M1/127; G06; G06G; G06G7/00; G06G7/48; G06G7/70
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |