US3465133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carry or borrow system for arithmetic computations
Assignee: Boeing North American Inc
•
Filing: 1966-06-07
•
Granted: 1969-09-02
•
Expires: 1986-06-07
Abstract
No abstract record available.
Inventors
- 👤 Robert K Booher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:22
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/48; G06F7/50; G06F7/505; G06F7/506; G06F2207/00; G06F2207/38; G06F2207/3804; G06F2207/386; G06F2207/3876
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3100837A
Cited
US3075093A
Cited
GB981922A
Cited
US3125675A
Cited
US3234371A
Cited
US3249747A
Cited
US3407357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |