Patent US2905146A successfully refreshed from Google Patents.
US2905146A
Expired / Lapsed
US
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Protraction-retraction mechanism for writing instruments
Assignee: Individual
•
Filing: 1956-11-29
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Granted: 1959-09-22
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Expires: 1976-11-29
Abstract
No abstract record available.
Inventors
- 👤 Frank T Johmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:56
CPC Classifications
B; B43; B43K; B43K24/00; B43K24/02
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) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |