US2821813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for the production of a paraboloidal body
Assignee: Siemens Schweiz AG
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Filing: 1957-05-28
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Granted: 1958-02-04
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Expires: 1977-05-28
Abstract
No abstract record available.
Inventors
- 👤 Degler Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:51
CPC Classifications
B; B24; B24B; B24B13/00; B24B13/015; Y; Y10; Y10T; Y10T29/00; Y10T29/44; Y10T409/00; Y10T409/30; Y10T409/304536; Y10T409/305544; Y10T409/305656; Y10T409/305768; Y10T82/00; Y10T82/14; Y10T82/149; Y10T82/25; Y10T82/2511
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |