US2704656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
freer
Assignee: —
•
Filing: —
•
Granted: 1955-03-22
•
Expires: 1972-03-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:27
CPC Classifications
F; F17; F17C; F17C1/00; F17C1/02; F17C1/08; B; B67; B67D; B67D7/00; B67D7/06; B67D7/80; F25; F25C; F25C1/00; F25C1/12; F25D; F25D31/00; F25D31/002; F28; F28D; F28D1/00; F28D1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE364785C
Cited
US1934371A
Cited
US2183509A
Cited
US2237246A
Cited
US2532026A
Cited
US2605620A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-21 | 1958-09-20 | 1959-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-21 | 1962-09-20 | 1963-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-21 | 1966-09-20 | 1967-03-22 | $7700.00 | Window Closed / Lapsed |