Patent US2678633A successfully refreshed from Google Patents.
US2678633A
Expired / Lapsed
US
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Writing instrument
Assignee: Decca Record Co Ltd
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Filing: 1952-01-25
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Granted: 1954-05-18
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Expires: 1972-01-25
Abstract
No abstract record available.
Inventors
- 👤 Alfred T Holden
- 👤 George L Wallis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:37
CPC Classifications
B; B43; B43K; B43K5/00; B43K5/02; B43K5/12; B43K29/00; B43K29/08
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) | 1957-05-17 | 1957-11-16 | 1958-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-17 | 1961-11-16 | 1962-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-17 | 1965-11-16 | 1966-05-18 | $7700.00 | Window Closed / Lapsed |