Patent US3172415A successfully refreshed from Google Patents.
US3172415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submerged surface cleaning apparatus
Assignee: Individual
•
Filing: 1962-07-19
•
Granted: 1965-03-09
•
Expires: 1982-07-19
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Maushund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:21
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/14; E04H4/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
IN A CLEANING APPARATUS, THE COMBINATION COMPRISING: FLEXIBLE CUP MEANS DEFINING A SUCTION CHAMBER; AND
Claim 2
Dependent Claim
15 words
IN A CLEANING APPARATUS, THE COMBINATION COMPRISING: FLEXIBLE CUP MEANS DEFINING A SUCTION CHAMBER; AND
References Cited (Backward Citations)
US200902A
Cited
GB190526553A
Cited
US977005A
Cited
US1854235A
Cited
US2561025A
Cited
US2840840A
Cited
US3003169A
Cited
US3080590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |