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US2818947A
Expired / Lapsed
US
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Drywall doorframes
Assignee: Individual
•
Filing: 1955-10-03
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Granted: 1958-01-07
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Expires: 1975-10-03
Abstract
No abstract record available.
Inventors
- 👤 Goldberg Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:30
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/96; E06B3/988; E06B3/9885; E06B1/00; E06B1/04; E06B1/52; E06B1/56; E06B1/60; E06B1/6015
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2660272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |