Patent US2989672A successfully refreshed from Google Patents.
US2989672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agins
Assignee: —
•
Filing: —
•
Granted: 1961-06-20
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Expires: 1978-06-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:54
CPC Classifications
F; F41; F41G; F41G3/00; F41G3/22; F16; F16M; F16M11/00; F16M11/02; F16M11/18; F16M11/04; F16M11/06; F16M11/10; G; G01; G01C; G01C21/00; G01C21/10; G01C21/12; G01C21/16; G01C21/18; H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/18; F16M2200/00; F16M2200/04; F16M2200/041; F16M2200/044
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) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |