Patent US2750984A successfully refreshed from Google Patents.
Patent US2208496A successfully refreshed from Google Patents.
US2208496A
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Rotary breech mechanism for power generating propulsive charges
Assignee: Individual
•
Filing: 1935-04-16
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Granted: 1940-07-16
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Expires: 1955-04-16
Abstract
No abstract record available.
Inventors
- 👤 Coffman Roscoe Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:51
CPC Classifications
F; F41; F41A; F41A9/00; F41A9/01; F41A9/24; F41A9/26; F41A9/27; Y; Y10; Y10S; Y10S60/00; Y10S60/914
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-07-16 | 1944-01-15 | 1944-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-07-16 | 1948-01-15 | 1948-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-07-16 | 1952-01-15 | 1952-07-16 | $7700.00 | Window Closed / Lapsed |