Patent US2155100A successfully refreshed from Google Patents.
Patent US3098733A successfully refreshed from Google Patents.
Patent US2972136A successfully refreshed from Google Patents.
US2972136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data handling system and magnetic switching network therefor
Assignee: Individual
•
Filing: 1955-10-10
•
Granted: 1961-02-14
•
Expires: 1975-10-10
Abstract
No abstract record available.
Inventors
- 👤 Gieseler Luther Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:41
CPC Classifications
H; H03; H03M; H03M1/00; G; G01; G01L; G01L1/00; G01L1/20; G01L1/22; G01L1/225; G01L1/2256; H03M1/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2139232A
Cited
US2497961A
Cited
US2644129A
Cited
US2717994A
Cited
US2754503A
Cited
US2682615A
Cited
US2691073A
Cited
US2723355A
Cited
US2784396A
Cited
US2790159A
Cited
US2767330A
Cited
US2809303A
Cited
US2918664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-14 | 1964-08-15 | 1965-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-14 | 1968-08-15 | 1969-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-14 | 1972-08-15 | 1973-02-14 | $7700.00 | Window Closed / Lapsed |