Patent US2812628A successfully refreshed from Google Patents.
US2812628A
Expired / Lapsed
US
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Package sealing machine
Assignee: WR Grace and Co
•
Filing: 1954-02-19
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Granted: 1957-11-12
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Expires: 1974-02-19
Abstract
No abstract record available.
Inventors
- 👤 Russell Arthur Gilbert
- 👤 Jr Frank Alfred Clary
- 👤 Casey Francis Bernard
- 👤 Dallon Robert Eldon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:00
CPC Classifications
B; B67; B67B; B67B7/00; B67B7/24; B65; B65B; B65B31/00; B65B31/04; B65B31/06; B65B51/00; B65B51/04; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5102; Y10T29/5186; Y10T29/53; Y10T29/53709; Y10T29/53787
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1529903A
Cited
US2353400A
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 |