Patent US2275640A successfully refreshed from Google Patents.
US2979005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making curved sandwich panels
Assignee: Rohr Inc
•
Filing: 1956-01-13
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Granted: 1961-04-11
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Expires: 1976-01-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Thomas A Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:04
CPC Classifications
B; B21; B21D; B21D47/00; B23; B23K; B23K1/00; B23K1/0008; B23K1/0014; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49879
Claims Analysis
Total Claims: 0
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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) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |