Patent US3053027A successfully refreshed from Google Patents.
US3053027A
Expired / Lapsed
US
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Paper valve bag applicator for pulverized material
Assignee: Individual
•
Filing: 1959-03-16
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Granted: 1962-09-11
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Expires: 1979-03-16
Abstract
No abstract record available.
Inventors
- 👤 Frost Ralph Irving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:27
CPC Classifications
B; B65; B65B; B65B43/00; B65B43/12; B65B43/14; B65B43/16; B65B43/26; B65B43/262
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1782733A
Cited
US2609134A
Cited
US2540489A
Cited
US2923111A
Cited
US2848857A
Cited
US2833097A
Cited
US2834166A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |