US2812919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drum filling machine
Assignee: California Research LLC
•
Filing: 1955-01-17
•
Granted: 1957-11-12
•
Expires: 1975-01-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Albert S Guerard
- 👤 Rufus P Ranney
- 👤 Donald H Reese
- 👤 Macdonald Bruce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:49
CPC Classifications
B; B67; B67C; B67C3/00; B67C3/30; B67C3/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US388930A
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US620877A
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US651651A
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US1106679A
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US1155009A
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US1180807A
Cited
US1924025A
Cited
US2066169A
Cited
US2648479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |