US2735574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
williams
Assignee: —
•
Filing: —
•
Granted: 1956-02-21
•
Expires: 1973-02-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:01
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/34; B65D88/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A FLOATING TANK FOR USE WITH A STORAGE TANK HAVING UPSTANDING SIDE WALLS AND A BOTTOM WALL, COMPRISING: A MAIN SECTION FORMED WITH AN APERTURE; AN AUXILIARY SECTION NORMALLY COVERING SAID APERTURE; FIRST SUPPORT MEANS FOR HOLDING SAID MAIN SECTION SPACED ABOVE SAID BOTTOM WALL WHEN THE CONTENTS OF SAID TANK ARE DRAINED; AND, SECOND SUPPORT MEANS FOR HOLDING SAID AUXILIARY SECTION
Claim 2
Dependent Claim
62 words
A FLOATING TANK FOR USE WITH A STORAGE TANK HAVING UPSTANDING SIDE WALLS AND A BOTTOM WALL, COMPRISING: A MAIN SECTION FORMED WITH AN APERTURE; AN AUXILIARY SECTION NORMALLY COVERING SAID APERTURE; FIRST SUPPORT MEANS FOR HOLDING SAID MAIN SECTION SPACED ABOVE SAID BOTTOM WALL WHEN THE CONTENTS OF SAID TANK ARE DRAINED; AND, SECOND SUPPORT MEANS FOR HOLDING SAID AUXILIARY SECTION
References Cited (Backward Citations)
US2586856A
Cited
US2461763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-20 | 1959-08-22 | 1960-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-20 | 1963-08-22 | 1964-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-20 | 1967-08-22 | 1968-02-21 | $7700.00 | Window Closed / Lapsed |