US3226259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for cleaning a submerged surface
Assignee: Individual
•
Filing: 1962-04-19
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Granted: 1965-12-28
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Expires: 1982-04-19
Abstract
No abstract record available.
Inventors
- 👤 Henry N Armbrust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:34
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/14; E04H4/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
THE METHOD OF TREATING A SUBMERGED SURFACE WITH A LIQUID WHICH COMPRISES POSITIONING A WALL SPACED FROM THE AREA OF THE SURFACE TO BE TREATED AND SEALING THE WALL ADJACENT ITS PERIPHERY TO THE SURFACE TO PREVENT THE FLOW OF LIQUID BENEATH SAID WALL, EXTRACTING THE SUBMERGING LIQUID FROM THE SEALED AREA PROVIDING APARTIAL VACUUM THEREIN, AND THEN CONDUCTING A TREATING CHEMICAL SOLUTION
Claim 2
Independent Claim
63 words
THE METHOD OF TREATING A SUBMERGED SURFACE WITH A LIQUID WHICH COMPRISES POSITIONING A WALL SPACED FROM THE AREA OF THE SURFACE TO BE TREATED AND SEALING THE WALL ADJACENT ITS PERIPHERY TO THE SURFACE TO PREVENT THE FLOW OF LIQUID BENEATH SAID WALL, EXTRACTING THE SUBMERGING LIQUID FROM THE SEALED AREA PROVIDING APARTIAL VACUUM THEREIN, AND THEN CONDUCTING A TREATING CHEMICAL SOLUTION
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |