Patent US4013911A successfully refreshed from Google Patents.
US2954064A
Expired / Lapsed
US
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Machine for forming ring reinforced convolutions in a tube
Assignee: Solar Aircraft Co
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Filing: 1956-04-06
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Granted: 1960-09-27
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Expires: 1976-04-06
Abstract
No abstract record available.
Inventors
- 👤 Mers Francis F De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:25
CPC Classifications
B; B21; B21D; B21D15/00; B21D15/04; B21D15/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49877; Y10T29/49908; Y10T29/49938; Y10T29/4994; Y10T29/51; Y10T29/5122; Y10T29/53; Y10T29/53987
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1702047A
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US1733455A
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US1689620A
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US1774231A
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US1879663A
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US2106496A
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US2106495A
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US2306018A
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US2581787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |