US2445464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide rule
Assignee: Individual
•
Filing: 1944-05-27
•
Granted: 1948-07-20
•
Expires: 1964-05-27
Abstract
No abstract record available.
Inventors
- 👤 Jeremiah F Ailinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:44
CPC Classifications
G; G06; G06G; G06G1/00; G06G1/02; G06G1/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE492010C
Cited
US907373A
Cited
US980412A
Cited
US1150771A
Cited
US1488686A
Cited
US1942349A
Cited
AT152123B
Cited
US2170144A
Cited
US2285722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-20 | 1952-01-19 | 1952-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-20 | 1956-01-19 | 1956-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-20 | 1960-01-19 | 1960-07-20 | $7700.00 | Window Closed / Lapsed |