US2964240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plotter
Assignee: Electro Mechanical Research Inc
•
Filing: 1953-08-28
•
Granted: 1960-12-13
•
Expires: 1973-08-28
Abstract
No abstract record available.
Inventors
- 👤 John F Brinster
- 👤 Donath Erwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:58
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/12; H03M1/1205
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2094983A
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US2360883A
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US2440264A
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US2442098A
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US2705901A
Cited
US2510200A
Cited
US2666807A
Cited
DE915279C
Cited
US2704633A
Cited
US2781970A
Cited
US2624848A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |