Patent US2561085A successfully refreshed from Google Patents.
Patent US2074953A successfully refreshed from Google Patents.
Patent US2775403A successfully refreshed from Google Patents.
US2775403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sign detection means for "crawl" carry registers
Assignee: Monroe Calculating Machine Co
•
Filing: 1952-10-03
•
Granted: 1956-12-25
•
Expires: 1972-10-03
Abstract
No abstract record available.
Inventors
- 👤 George V Hall
- 👤 Walter S Oliwa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:22
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/46; G06F7/462; G06F7/463; G06M; G06M1/00; G06M1/27; G06M1/276
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) | 1959-12-25 | 1960-06-25 | 1960-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-25 | 1964-06-25 | 1964-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-25 | 1968-06-25 | 1968-12-25 | $7700.00 | Window Closed / Lapsed |