US3052305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure jet type helicopter
Assignee: Williams International Corp
•
Filing: 1958-03-14
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Granted: 1962-09-04
•
Expires: 1978-03-14
Abstract
No abstract record available.
Inventors
- 👤 John F Jones
- 👤 Sam B Williams
- 👤 Jack J Benson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:43
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/04; B64C27/12; B64C27/16; B64C27/18; B64C39/00; B64C39/02; B64C39/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2553193A
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US2654995A
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US2689011A
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US2631676A
Cited
US2757745A
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GB760050A
Cited
FR1095157A
Cited
US2831543A
Cited
US2814349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |