Patent US2752864A successfully refreshed from Google Patents.
US2752864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bulkhead for shipping compartments
Assignee: Individual
•
Filing: 1955-05-02
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Granted: 1956-07-03
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Expires: 1975-05-02
Abstract
No abstract record available.
Inventors
- 👤 Sr Paul A Mcdougal
- 👤 Frederick G Seelmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:56
CPC Classifications
B; B61; B61D; B61D45/00; B61D45/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US753162A
Cited
US1388819A
Cited
US1453986A
Cited
US1825452A
Cited
US2005086A
Cited
US2287852A
Cited
US2612122A
Cited
US2677244A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-03 | 1960-01-02 | 1960-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-03 | 1964-01-02 | 1964-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-03 | 1968-01-02 | 1968-07-03 | $7700.00 | Window Closed / Lapsed |