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US2548476A
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US
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Bracket
Assignee: Individual
•
Filing: 1947-10-15
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Granted: 1951-04-10
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Expires: 1967-10-15
Abstract
No abstract record available.
Inventors
- 👤 Horstma Kathleen Mary E Quicke
- 👤 Norris Harold Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:29
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/14; F21V21/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL43111C
Cited
US218210A
Cited
US1711768A
Cited
GB285045A
Cited
US2036097A
Cited
US2076446A
Cited
US2049434A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-09 | 1954-10-09 | 1955-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-09 | 1958-10-09 | 1959-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-09 | 1962-10-09 | 1963-04-10 | $7700.00 | Window Closed / Lapsed |