US3431937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medical service unit
Assignee: Allied Healthcare Products Inc
•
Filing: 1965-09-08
•
Granted: 1969-03-11
•
Expires: 1985-09-08
Abstract
No abstract record available.
Inventors
- 👤 Raymond C Hettlinger
- 👤 Robert L Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:24
CPC Classifications
A; A61; A61G; A61G13/00; A61G13/10; A61G13/107; A61G12/00; A61G12/002; A61G12/004; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6918
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1004461A
Cited
US2372196A
Cited
FR1022299A
Cited
US3032057A
Cited
US3203513A
Cited
US3213877A
Cited
US3216446A
Cited
US3285282A
Cited
US3314335A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |