Patent US3401401A successfully refreshed from Google Patents.
US3401401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple pen plotter cartridge
Assignee: Lockheed Martin Corp
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Filing: 1967-03-10
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Granted: 1968-09-10
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Expires: 1987-03-10
Abstract
No abstract record available.
Inventors
- 👤 Read Joseph Robin
- 👤 Robert C Morton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:30
CPC Classifications
G; G01; G01D; G01D15/00; G01D15/24; B; B43; B43L; B43L13/00; G06; G06K; G06K15/00; G06K15/22
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) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |