US3046556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink supplying means for the pens of recording meter apparatus
Assignee: Esterbrook Pen Co
•
Filing: 1960-02-29
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Granted: 1962-07-24
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Expires: 1980-02-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank P Summers
- 👤 Russell E Mattson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:46
CPC Classifications
B; B43; B43L; B43L25/00; B43L25/02; B43L25/04; G; G01; G01D; G01D15/00; G01D15/16
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) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |