US2722868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manufacturing a composition material
Assignee: Individual
•
Filing: 1950-10-03
•
Granted: 1955-11-08
•
Expires: 1970-10-03
Abstract
No abstract record available.
Inventors
- 👤 Norman P Harshberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:47
CPC Classifications
D; D21; D21F; D21F13/00; D21J; D21J1/00; D21J1/16
Claims Analysis
Total Claims: 0
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US2341499A
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US2416680A
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US2383736A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-07 | 1959-05-09 | 1959-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-07 | 1963-05-09 | 1963-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-07 | 1967-05-09 | 1967-11-08 | $7700.00 | Window Closed / Lapsed |