US2800705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making twisted flexible wave guides
Assignee: Airtron Inc
•
Filing: 1952-10-08
•
Granted: 1957-07-30
•
Expires: 1972-10-08
Abstract
No abstract record available.
Inventors
- 👤 Ingalls David
- 👤 Jean W Hamilton
- 👤 Tore N Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:03
CPC Classifications
B; B21; B21D; B21D11/00; B21D11/14; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49016
Claims Analysis
Total Claims: 0
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US2338847A
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US2366164A
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US2515097A
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US2566439A
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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) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |