US2806409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling mechanism for machine guns and the like
Assignee: Individual
•
Filing: 1951-05-29
•
Granted: 1957-09-17
•
Expires: 1971-05-29
Abstract
No abstract record available.
Inventors
- 👤 William P Purcella
- 👤 Joseph F Purcella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:05
CPC Classifications
F; F41; F41A; F41A13/00; F41A13/12; F25; F25B; F25B27/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE300110C
Cited
GB191509950A
Cited
US1401667A
Cited
DE487229C
Cited
DE585851C
Cited
US2287066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |