US2609190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction apparatus for cleaning rooms
Assignee: ROBERT G WHITEHEAD
•
Filing: 1949-07-22
•
Granted: 1952-09-02
•
Expires: 1969-07-22
Abstract
No abstract record available.
Inventors
- 👤 Harold F Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:19
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/38; Y; Y10; Y10S; Y10S55/00; Y10S55/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US654866A
Cited
US1026406A
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US1188834A
Cited
US1266966A
Cited
US1465432A
Cited
US1941734A
Cited
US2150614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |