Patent US3120432A successfully refreshed from Google Patents.
US3120432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust collector and support for the bag thereof
Assignee: Hammond Machinery Builders Inc
•
Filing: 1960-08-01
•
Granted: 1964-02-04
•
Expires: 1980-08-01
Abstract
No abstract record available.
Inventors
- 👤 Robert H Aldrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:31
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; B; B01; B01D; B01D46/00; B01D46/02; B01D46/04; B01D46/42; B01D46/48; B01D46/66; B01D46/70; B01D46/71; B01D50/00; B01D50/20; B04; B04C; B04C3/00; B04C3/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US162679A
Cited
US1260407A
Cited
US1354847A
Cited
US1428583A
Cited
US1761377A
Cited
US1813896A
Cited
US1886884A
Cited
DE611252C
Cited
US2456639A
Cited
US2607436A
Cited
US2540919A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-03 | 1967-08-05 | 1968-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-03 | 1971-08-05 | 1972-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-03 | 1975-08-05 | 1976-02-04 | $7700.00 | Window Closed / Lapsed |