Patent US3505160A successfully refreshed from Google Patents.
US2852187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic coding system for a digital differential analyzer
Assignee: Northrop Grumman Corp
•
Filing: 1952-12-16
•
Granted: 1958-09-16
•
Expires: 1972-12-16
Abstract
No abstract record available.
Inventors
- 👤 Robert M Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:29
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/06; G06F7/00; G06F7/60; G06F7/64; G06F7/66
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2737342A
Cited
US2604262A
Cited
FR1014373A
Cited
US2701095A
Cited
US2789759A
Cited
US2767908A
Cited
US2651458A
Cited
US2679638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |