Patent US2980069A successfully refreshed from Google Patents.
US2980069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical computing device
Assignee: Holley Performance Products Inc
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Filing: 1958-11-24
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Granted: 1961-04-18
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Expires: 1978-11-24
Abstract
No abstract record available.
Inventors
- 👤 Eugene B Hilker
- 👤 Warren H Cowles
- 👤 George B Stroh
- 👤 Robert S Fleming
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:53
CPC Classifications
G; G06; G06G; G06G5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |