US3247637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow wall constructions and parts therefor or the like
Assignee: Reynolds Metals Co
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Filing: 1962-02-28
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Granted: 1966-04-26
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Expires: 1982-02-28
Abstract
No abstract record available.
Inventors
- 👤 Clair M Robertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:58
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/48; E06B3/485; E06B3/486; B; B61; B61D; B61D17/00; B61D17/04; B61D17/041; B61D19/00; B61D19/003; B61D19/005; B61D19/006; E06B9/00; E06B9/02; E06B9/08; E06B9/11; E06B9/15; E06B2009/1533; E06B2009/1538; E06B2009/1544
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2302166A
Cited
US2642018A
Cited
US2827115A
Cited
GB816243A
Cited
US2880796A
Cited
US2902122A
Cited
US3062338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |