Patent US2569952A successfully refreshed from Google Patents.
US2569952A
Expired / Lapsed
US
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Cement gun apparatus
Assignee: Individual
•
Filing: 1948-07-27
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Granted: 1951-10-02
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Expires: 1968-07-27
Abstract
No abstract record available.
Inventors
- 👤 Ian M Ridley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:25
CPC Classifications
E; E04; E04F; E04F21/00; E04F21/02; E04F21/06; E04F21/08; E04F21/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1954005A
Cited
US699405A
Cited
US998762A
Cited
US1047680A
Cited
US1333079A
Cited
US1718507A
Cited
US1559666A
Cited
US1737044A
Cited
US2006757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |