US3479561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Breath operated device
Assignee: H TALMAN DYBVIG
•
Filing: 1967-09-25
•
Granted: 1969-11-18
•
Expires: 1987-09-25
Abstract
No abstract record available.
Inventors
- 👤 John L Janning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:15
CPC Classifications
F; F21; F21S; F21S9/00; F21S9/02; F21S6/00; F21S6/001; F21V; F21V23/00; F21V23/04; F21W; F21W2121/00; Y; Y10; Y10S; Y10S362/00; Y10S362/806; Y10S362/81
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3340647A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |