Patent US2974306A successfully refreshed from Google Patents.
US2974306A
Expired / Lapsed
US
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Assignee: —
•
Filing: 1954-11-15
•
Granted: 1961-03-07
•
Expires: 1974-11-15
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:59
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/22; G06F15/00; G06F15/08; G06F3/00; G06F3/06; G06F3/0601; G06F7/02; G06F7/026; G06F3/0668; G06F3/0671; G06F3/0673; G06F3/0682; Y; Y10; Y10S; Y10S707/00; Y10S707/99931; Y10S707/99937
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |