US2598083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Movement unit for mechanical pencils
Assignee: Welsh Manufacturing Co
•
Filing: 1950-04-01
•
Granted: 1952-05-27
•
Expires: 1970-04-01
Abstract
No abstract record available.
Inventors
- 👤 Burton M Tapner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:47
CPC Classifications
B; B43; B43K; B43K21/00; B43K21/02; B43K21/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/4984
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1790430A
Cited
US1628639A
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US2009182A
Cited
US2058291A
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US2129655A
Cited
US2075725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-27 | 1955-11-26 | 1956-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-27 | 1959-11-26 | 1960-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-27 | 1963-11-26 | 1964-05-27 | $7700.00 | Window Closed / Lapsed |