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Patent US2744329A successfully refreshed from Google Patents.
US2744329A
Expired / Lapsed
US
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Constant pressure scriber
Assignee: Commonwealth Engineering Company of Ohio
•
Filing: 1954-05-05
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Granted: 1956-05-08
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Expires: 1974-05-05
Abstract
No abstract record available.
Inventors
- 👤 Raymond C Way
- 👤 Merle L Downs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:13
CPC Classifications
B; B25; B25H; B25H7/00; B25H7/04; B25H7/045; Y; Y10; Y10T; Y10T408/00; Y10T408/55; Y10T408/553; Y10T408/561; Y10T408/5617
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US487988A
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US1220597A
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US1191725A
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US1217572A
Cited
US2436542A
Cited
US2514003A
Cited
US2504832A
Cited
US2480168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |