Patent US2324221A successfully refreshed from Google Patents.
US2324221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Counting and control mechanism
Assignee: International Business Machines Corp
•
Filing: 1939-09-21
•
Granted: 1943-07-13
•
Expires: 1959-09-21
Abstract
No abstract record available.
Inventors
- 👤 Hans P Luhn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:17
CPC Classifications
D; D04; D04B; D04B15/00; D04B15/66; B; B23; B23Q; B23Q15/00; Y; Y10; Y10T; Y10T74/00; Y10T74/13; Y10T74/131; Y10T74/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-07-12 | 1947-01-11 | 1947-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-07-12 | 1951-01-11 | 1951-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-07-12 | 1955-01-11 | 1955-07-13 | $7700.00 | Window Closed / Lapsed |