US2835871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-channel rotary wave guide joint
Assignee: Individual
•
Filing: 1953-08-07
•
Granted: 1958-05-20
•
Expires: 1973-08-07
Abstract
No abstract record available.
Inventors
- 👤 Herbert P Raabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:53
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/06; H01P1/062; H01P1/066; H01P1/069
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2088749A
Cited
US2523320A
Cited
US2513205A
Cited
US2471021A
Cited
US2719271A
Cited
US2713151A
Cited
US2534876A
Cited
US2676306A
Cited
US2748350A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |