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US2847976A
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Spacer pattern for capillary reservoir elements
Assignee: Parker Pen Co
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Filing: 1955-10-24
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Granted: 1958-08-19
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Expires: 1975-10-24
Abstract
No abstract record available.
Inventors
- 👤 Raymond L Spaulding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:24
CPC Classifications
B; B43; B43K; B43K5/00; B43K5/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2522555A
Cited
US2587949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |