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US2772890A
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Assignee: MORRIS WEINTRAUB
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Filing: 1954-05-26
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Granted: 1956-12-04
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Expires: 1974-05-26
Abstract
No abstract record available.
Inventors
- 👤 Frank A Gastright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:59
CPC Classifications
B; B62; B62B; B62B1/00; B62B1/10; B62B1/12; B62B2205/00; B62B2205/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US208172A
Cited
US362868A
Cited
US634799A
Cited
US2326482A
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GB578782A
Cited
US2502579A
Cited
US2523893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |