US2732772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hornbostel
Assignee: —
•
Filing: —
•
Granted: 1956-01-31
•
Expires: 1973-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:40
CPC Classifications
D; D21; D21F; D21F3/00; D21F3/02; D21F3/04; D21F2/00; Y; Y10; Y10S; Y10S162/00; Y10S162/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1898611A
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US1959520A
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US1981049A
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US1991346A
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Cited
US2209757A
Cited
US2209758A
Cited
US2386584A
Cited
US2653522A
Cited
US2686463A
Cited
US2696149A
Cited
US2694347A
Cited
US2653523A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-30 | 1959-08-01 | 1960-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-30 | 1963-08-01 | 1964-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-30 | 1967-08-01 | 1968-01-31 | $7700.00 | Window Closed / Lapsed |