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Patent US2600050A successfully refreshed from Google Patents.
US2600050A
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Assignee: PHILIP L DU BOFF
•
Filing: 1949-03-31
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Granted: 1952-06-10
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Expires: 1969-03-31
Abstract
No abstract record available.
Inventors
- 👤 Boff Philip L Du
- 👤 Thomas H Dooley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:55
CPC Classifications
A; A47; A47B; A47B43/00; A47B43/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1806610A
Cited
USRE18293E
Cited
US1423252A
Cited
US1937935A
Cited
US2183883A
Cited
US2443515A
Cited
US2461219A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-10 | 1955-12-10 | 1956-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-10 | 1959-12-10 | 1960-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-10 | 1963-12-10 | 1964-06-10 | $7700.00 | Window Closed / Lapsed |