US2733693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
johnsson
Assignee: —
•
Filing: —
•
Granted: 1956-02-07
•
Expires: 1973-02-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:06
CPC Classifications
F; F28; F28G; F28G13/00; Y; Y10; Y10S; Y10S159/00; Y10S159/13; Y10S159/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US385510A
Cited
US497046A
Cited
US725540A
Cited
US897609A
Cited
US1040688A
Cited
US1269053A
Cited
US1269052A
Cited
US1717207A
Cited
US1927555A
Cited
US2408820A
Cited
US2519845A
Cited
US2614543A
Cited
US2650482A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-06 | 1959-08-08 | 1960-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-06 | 1963-08-08 | 1964-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-06 | 1967-08-08 | 1968-02-07 | $7700.00 | Window Closed / Lapsed |