Patent US2811947A successfully refreshed from Google Patents.
US2811947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Writing instrument
Assignee: Individual
•
Filing: 1953-01-14
•
Granted: 1957-11-05
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Expires: 1973-01-14
Abstract
No abstract record available.
Inventors
- 👤 Rigondaud Guy Frederic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:47
CPC Classifications
B; B43; B43K; B43K5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US255205A
Cited
US525895A
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US1336119A
Cited
US1787406A
Cited
US2114118A
Cited
CH213442A
Cited
GB634735A
Cited
US2681041A
Cited
US2684052A
Cited
DE803094C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |