US2515893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intermittent stop mechanism for recording pencils
Assignee: Pierce Co
•
Filing: 1944-12-08
•
Granted: 1950-07-18
•
Expires: 1964-12-08
Abstract
No abstract record available.
Inventors
- 👤 La Verne R Philpott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:24
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/06; H04N1/0607; H04N1/0621; H04N1/0642; H04N1/024; H04N1/032; H04N1/0323; H04N1/0671; H04N1/0678; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1746407A
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US1985057A
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US2109109A
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US2181867A
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US2191867A
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US2282929A
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US2292119A
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US2376888A
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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) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |