Patent US2364211A successfully refreshed from Google Patents.
US2364211A
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US
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Apparatus for inflating and deflating pontons or the like
Assignee: Schramm Inc
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Filing: 1943-04-30
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Granted: 1944-12-05
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Expires: 1963-04-30
Abstract
No abstract record available.
Inventors
- 👤 Alfred N Gustafson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:42
CPC Classifications
F; F04; F04F; F04F5/00; F04F5/44; F04F5/46; F04F5/466; B; B63; B63C; B63C9/00; B63C9/24; F04F5/461; B63C2009/0023; B63C2009/0076
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-12-05 | 1948-06-05 | 1948-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-12-05 | 1952-06-05 | 1952-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-12-05 | 1956-06-05 | 1956-12-05 | $7700.00 | Window Closed / Lapsed |