US2845988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for corrugating a tube and collapsing the corrugations
Assignee: Flexonics Corp
•
Filing: 1954-02-15
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Granted: 1958-08-05
•
Expires: 1974-02-15
Abstract
No abstract record available.
Inventors
- 👤 Raymond C Andersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:11
CPC Classifications
B; B21; B21D; B21D15/00; B21D15/04; B21D15/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US700662A
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US928254A
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US1605194A
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US2027018A
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US2092873A
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US2139714A
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US2176188A
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US2669278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |