Patent US2767414A successfully refreshed from Google Patents.
US2767414A
Expired / Lapsed
US
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Sweeper
Assignee: PARKER SWEEPER Co
•
Filing: 1949-11-19
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Granted: 1956-10-23
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Expires: 1969-11-19
Abstract
No abstract record available.
Inventors
- 👤 Parker Edwin Dudley
- 👤 Earl E Stelzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:23
CPC Classifications
E; E01; E01H; E01H1/00; E01H1/02; E01H1/04; E01H1/047; A; A01; A01D; A01D76/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US572980A
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US605385A
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US622372A
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US1313228A
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US857415A
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US1223542A
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US1229127A
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US1368134A
Cited
US2121786A
Cited
US2183910A
Cited
US2407430A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |