Patent US3050768A successfully refreshed from Google Patents.
US3050768A
Expired / Lapsed
US
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Felt pack construction of pens
Assignee: SPEEDRY CHEMICAL PRODUCTS Inc
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Filing: 1961-01-05
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Granted: 1962-08-28
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Expires: 1981-01-05
Abstract
No abstract record available.
Inventors
- 👤 Sidney N Rosenthal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:40
CPC Classifications
A; A46; A46B; A46B11/00; A46B11/001; A46B11/0013; B; B43; B43K; B43K8/00; B43K8/02; B43K8/024; Y; Y10; Y10S; Y10S215/00; Y10S215/08; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/4992; Y10T29/49925; Y10T29/49927; Y10T29/49929; Y10T29/49938
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US211104A
Cited
US2732824A
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US1576533A
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US2243752A
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US2416596A
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US2547541A
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US2713176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |