US3438445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Life-supporting and property protecting firefighting process and apparatus
Assignee: Calmac Manufacturing Corp
•
Filing: 1967-07-25
•
Granted: 1969-04-15
•
Expires: 1987-07-25
Abstract
No abstract record available.
Inventors
- 👤 Calvin D Maccracken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:15
CPC Classifications
A; A62; A62C; A62C5/00; A62C5/008; A62C27/00; A62C99/00; A62C99/0009; A62C99/0018
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2961050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |