US2852035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing device, in particular for the transfer of loose material into or out of gas-filled spaces
Assignee: Beazer East Inc
•
Filing: 1953-09-04
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Granted: 1958-09-16
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Expires: 1973-09-04
Abstract
No abstract record available.
Inventors
- 👤 Holle Ferdinand
- 👤 Holle Franziska
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:04
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/0015; B01J8/003; Y; Y10; Y10T; Y10T137/00; Y10T137/3367; Y10T137/4456; Y10T137/6416; Y10T137/6579
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |