Patent US2898987A successfully refreshed from Google Patents.
US2898987A
Expired / Lapsed
US
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Door construction
Assignee: Individual
•
Filing: 1955-05-24
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Granted: 1959-08-11
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Expires: 1975-05-24
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Ford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:00
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/48; E06B3/481; E06B3/70; E06B3/72; E06B3/723
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1571194A
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US1700184A
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US1934089A
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US2072514A
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US2351656A
Cited
US2596792A
Cited
US2597786A
Cited
US2572153A
Cited
US2684714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |