US3464416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sleep inducing method and headpiece
Assignee: Williams Instruments Inc
•
Filing: 1967-08-25
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Granted: 1969-09-02
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Expires: 1987-08-25
Abstract
No abstract record available.
Inventors
- 👤 Robert A Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:39
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/36014; A61N1/3603; A61N1/02; A61N1/04; A61N1/05; A61N1/0526; A61N1/36034; A61N1/36046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US768721A
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US1766471A
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US1849745A
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US3044151A
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FR1177325A
Cited
US3160159A
Cited
GB943512A
Cited
US3194860A
Cited
FR1350877A
Cited
US3255753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |