Patent US2979255A successfully refreshed from Google Patents.
US2979255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid operated automatic business machine
Assignee: —
•
Filing: —
•
Granted: 1961-04-11
•
Expires: 1978-04-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:00
CPC Classifications
G; G06; G06C; G06C21/00; G06C21/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2629549A
Cited
US995135A
Cited
US1238065A
Cited
US1080595A
Cited
US1079963A
Cited
US1851502A
Cited
US1985589A
Cited
US2157367A
Cited
US2504013A
Cited
US2661154A
Cited
US2800539A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |