Patent US6305378B1 successfully refreshed from Google Patents.
US2830684A
Expired / Lapsed
US
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Window construction
Assignee: Individual
•
Filing: 1956-10-31
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Granted: 1958-04-15
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Expires: 1976-10-31
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Bancroft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:41
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/54; E06B3/58; E06B3/62; E06B2003/6217; E06B2003/6223; E06B2003/6229; E06B2003/6238; E06B2003/6244; E06B2003/625; E06B2003/6264; E06B2003/627; E06B2003/6285
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US919887A
Cited
US2550300A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |