Patent US3449875A successfully refreshed from Google Patents.
US3449875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building construction
Assignee: Individual
•
Filing: 1967-04-06
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Granted: 1969-06-17
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Expires: 1987-04-06
Abstract
No abstract record available.
Inventors
- 👤 Herbert Elmer Snedeker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:01
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/56; E04B2/70; E04B2/701; E04B2/704
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US540084A
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DE880934C
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US1608273A
Cited
US1809508A
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US1899450A
Cited
US1910326A
Cited
GB426535A
Cited
US2291712A
Cited
GB571186A
Cited
US2563703A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |