Patent US2923900A successfully refreshed from Google Patents.
US2923900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poschenrieder
Assignee: —
•
Filing: —
•
Granted: 1960-02-02
•
Expires: 1977-02-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:56
CPC Classifications
—
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1808524A
Cited
US1967250A
Cited
US1921035A
Cited
US1969571A
Cited
US2094044A
Cited
US2170206A
Cited
US2266658A
Cited
US2222417A
Cited
US2814021A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |