US2939368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contour tracing apparatus
Assignee: Seneca Falls Machine Co
•
Filing: 1958-05-12
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Granted: 1960-06-07
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Expires: 1978-05-12
Abstract
No abstract record available.
Inventors
- 👤 Robert H Eisengrein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:49
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/24; B23Q35/26; B23Q35/30; B23Q35/34; B23C; B23C3/00; B23C3/12; B23Q35/08; B23Q35/12; B23Q35/121; B23Q35/123; B23Q35/126; B23Q2735/00; B23Q2735/002; B23Q2735/02; B23Q2735/06; B23Q2735/062; B23Q2735/065; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/300896; Y10T409/301176; Y10T409/301624; Y10T409/30168; Y10T409/301904; Y10T409/30196
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2388555A
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US2622616A
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US2627055A
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US2723598A
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US2679620A
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US2814239A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |