Patent US3486169A successfully refreshed from Google Patents.
US3486169A
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US
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Helmet combination suspension
Assignee: Automatic Sprinkler Corp
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Filing: 1968-01-26
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Granted: 1969-12-30
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Expires: 1988-01-26
Abstract
No abstract record available.
Inventors
- 👤 John H Rawlings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:25
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/10; A42B3/14; Y; Y10; Y10S; Y10S2/00; Y10S2/908; Y10S2/909
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2417616A
Cited
US2969546A
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US3183522A
Cited
US3289212A
Cited
US3292180A
Cited
US3344433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |