Patent US2834284A successfully refreshed from Google Patents.
US2834284A
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Article marking
Assignee: Buskirk & Co Inc Van
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Filing: 1952-11-14
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Granted: 1958-05-13
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Expires: 1972-11-14
Abstract
No abstract record available.
Inventors
- 👤 John D Van Buskirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:14
CPC Classifications
B; B41; B41F; B41F17/00; B41F17/24; B41F17/26; B65; B65B; B65B61/00; B65B61/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1845726A
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US2425249A
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US2674939A
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US2592588A
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US2636436A
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US2632383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |