US2737673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweeper
Assignee: PARKER SWEEPER Co
•
Filing: 1950-12-21
•
Granted: 1956-03-13
•
Expires: 1970-12-21
Abstract
No abstract record available.
Inventors
- 👤 Edwin D Parker
- 👤 Earl E Stelzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:20
CPC Classifications
E; E01; E01H; E01H1/00; E01H1/02; E01H1/04; E01H1/045; A; A01; A01G; A01G20/00; A01G20/40; A01G20/43
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE73426C
Cited
US611586A
Cited
US1911535A
Cited
US666689A
Cited
GB191124668A
Cited
US1185732A
Cited
US1507317A
Cited
FR788628A
Cited
US2552382A
Cited
US2564106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |