Patent US4920256A successfully refreshed from Google Patents.
Patent US2853956A successfully refreshed from Google Patents.
US2853956A
Expired / Lapsed
US
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Monobeam systems and apparatus
Assignee: Alweg Forschung GmbH
•
Filing: 1953-08-28
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Granted: 1958-09-30
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Expires: 1973-08-28
Abstract
No abstract record available.
Inventors
- 👤 Axel L Wenner-Gren
- 👤 Hinsken Josef
- 👤 Rethel Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:35
CPC Classifications
E; E01; E01B; E01B25/00; E01B25/08; E01B25/10; B; B61; B61B; B61B13/00; B61B13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |