US2989595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superimposed recording
Assignee: MARCHANT RES Inc
•
Filing: 1955-07-05
•
Granted: 1961-06-20
•
Expires: 1975-07-05
Abstract
No abstract record available.
Inventors
- 👤 Hunter Jonathan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:09
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/488; G11B5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US699630A
Cited
US2712572A
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US2496047A
Cited
US2697755A
Cited
US2803988A
Cited
AT174220B
Cited
US2929670A
Cited
GB734101A
Cited
US2843676A
Cited
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 |